Gansulin all-metal pen floating at a diagonal on a pale studio backdrop, dose window and cap label visible

Gansulin Peptide Pen · Reusable Dial-a-Dose, 3 ml (1-60 Units)

1 Pen
$64.99
Sale price  $64.99 Regular price  $149.00
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Gansulin all-metal pen floating at a diagonal on a pale studio backdrop, dose window and cap label visible

Gansulin Peptide Pen · Reusable Dial-a-Dose, 3 ml (1-60 Units)

183 reviews

$64.99
Sale price  $64.99 Regular price  $149.00
Shipping calculated at checkout.
★★★★★ 4.7 (183)

The Gansulin pen is an all-metal, dial-a-dose instrument for standard 3 ml (300-unit) glass cartridges. Where the market default is disposable plastic, this is a machined metal chassis built to be kept: one audible, tactile click per unit, from 1 to 60 units, with a dose window you can read at a glance.

Single pen — $64.99. One all-metal pen with its zip case. Add cartridges and bacteriostatic water below to complete the setup.

Specifications

Specifications

Product type Reusable dial-a-dose cartridge pen
Body material Anodized metal
Cartridge format Standard 3 ml / 300-unit glass cartridges. No proprietary consumables, no lock-in
Needle interface Standard screw-on pen needles (needles not included or sold)
Dose range 1 to 60 units, in 1-unit (0.01 ml) increments
Dose feedback Audible and tactile click per unit; firm end-of-travel stop
Overdraw interlock The dial stops when the set dose exceeds what remains in the cartridge
Dial-back correction Turn the knob back to reduce a set dose without dispensing a drop
In the box 1 pen and 1 zip case
Origin Ships from the USA
Intended use Research, educational, and demonstration use only

Genuine and new, shipped in a factory-sealed retail box.

Why buy this from Preppin Peppers
Straight from the manufacturerWe buy direct from the factories that build these pens. No importer, no distributor, no drop-shipper taking a cut, which is why our pens land under the reseller price for the same class of hardware.
The same spec every runSame factory, same tooling, same build each time, instead of whatever a marketplace seller sourced cheapest this month.
No lock-in, everStandard 3 ml (300-unit) glass cartridges and standard screw-on pen needles. No proprietary refills, so you are never tied to us.
Ships from the USAGenuine and new in factory-sealed retail packaging, with tracking emailed the moment it leaves our facility.
Wrong or damaged? We fix itAll sales are final, but if we ship the wrong item or it arrives damaged, contact us within 7 days of delivery and we will replace it or refund it at no cost to you.
We answer the hard questionsStopper format, dose mechanism, exact build: ask us anything about the hardware and you get a real answer, because we deal with the people who make it.

Sold for research, educational, and demonstration use only. Not a medical device, not sold sterile, and not for human or veterinary use of any kind. Not evaluated, cleared, or approved by the FDA. 18+.

Pairs with: standard 3 ml cartridges and bacteriostatic water for reconstitution. New here? See how a dial-a-dose pen works.

Common questions

What cartridges fit this pen?
Standard 3 ml (300-unit) glass pen cartridges, the same widely available format used across cartridge pens. No proprietary consumables and no lock-in.

How precise is the dial?
The dial sets 1 to 60 units per draw in 1-unit (0.01 ml) increments, with an audible and tactile click per unit and a firm end-of-travel stop.

Can a mis-set dial be corrected?
Yes. Dial-back correction reduces a set amount without dispensing a drop, and the overdraw interlock stops the dial when the setting exceeds what remains in the cartridge.

Are needles included?
No. The pen uses a standard screw-on pen-needle interface; needles are not included or sold by us.

What is in the box, and is the pen reusable?
One anodized-metal pen and one zip case. The pen is fully reusable; swap in a fresh standard 3 ml cartridge as needed. Ships from the USA.

What is this pen sold for?
Research, educational, and demonstration use only. It is not a medical device, is not sold sterile, and is not for human or veterinary use of any kind.

Bundle

For research, educational & demonstration use only · not a medical device · not for human or veterinary use · 18+ · full disclaimer

Genuine · new in factory-sealed retail box
Discreet plain-box shipping
Tracking number on every order
Wrong or damaged? Replaced free within 7 days
STORAGE & HANDLING

The pen is a mechanical instrument: keep it clean and dry at room temperature, protected from dust, moisture and direct sunlight. Do not leave it in a hot car and do not freeze it. With a filled cartridge seated, keep the pen below 86°F (30°C), per the manufacturer. The included zip case protects the dose mechanism in storage and transport.

SHIPPING & ALL SALES FINAL

Orders ship with tracking emailed to you. Please allow 5 to 10 business days for delivery within the US. We ship worldwide from the USA; US orders over $100 ship free. Given the nature of these products, all sales are final and items cannot be returned. If we shipped a wrong or damaged item, contact us within 7 days of delivery and we will make it right at no cost to you. See the shipping policy for details.

Reviews

4.7
★★★★★
183 reviews
5★147
4★26
3★10
2★0
1★0
  • ★★★★★
    ✓ Verified buyer

    instructions were thin

    The pen is good and well made no issues there. But the little instruction sheet was pretty bare bones. Figured it out myself but a bit more detail would be nice for the price. Three stars just for that.

    Reid A.
    Preppin’ Peppers replied

    Thanks for the fair review, there. Notes like this are how we get better and we are already looking at it. Glad to have you on the bench.

  • ★★★★★
    ✓ Verified buyer

    exactly as described

    exactly what the pictures showed. all metal decent weight smooth dial. sometimes stuff looks better online than real life but this was the opposite honestly

    Elena
  • ★★★★★
    ✓ Verified buyer

    i keep it on my bench and honestly it looks cool. but its functional too, dials clean and the click is reassuring

    Hazel B.
  • ★★★★★
    ✓ Verified buyer

    seal is tight

    The cartridge seats in there really snug and the seal feels tight. No wobble no leaks when I loaded it up for testing. Quality piece.

    Vaughn
  • ★★★★★
    ✓ Verified buyer

    slow to ship

    Product came sealed and the dial works smooth. only knock is it took like 5 days to ship. worth the wait tho

    Jonah A.
  • ★★★★★
    ✓ Verified buyer

    No more used syringes piling up. this reusable metal pen solves the whole problem. built like a tank.

    Tariq A.
  • ★★★★★
    ✓ Verified buyer

    replaces the whole syringe routine for my demos. dial a number show the click done. so much faster than drawing everything up. LOVE it

    Ian A.
  • ★★★★★
    ✓ Verified buyer

    sooo good

    this pen is sooo good. the number window is big and the click per unit makes it foolproof. def recommend

    Rhea
  • ★★★★★
    ✓ Verified buyer

    box came a little dented

    Pen is perfect but the outer box arrived kinda dented on one corner. The pen inside was fine and still sealed so no harm. Just wish it was packed a bit better.

    Walt
  • ★★★★★
    ✓ Verified buyer

    Ok so I was skeptical but this is legit. metal all the way, dials perfect, and shipping was insanely fast.

    Willa A.
  • ★★★★★
    ✓ Verified buyer

    machined nicely

    the threads are clean the cap fits snug the dial turns smooth. you can tell its actually machined metal and not molded junk. impressed for the price honestly

    Paul A.
  • ★★★★★
    ✓ Verified buyer

    little heavy for some

    I actually love how heavy it is but if u want something light this aint it. otherwise flawless. clicks nice and reads easy

    Priya C.
  • ★★★★★
    ✓ Verified buyer

    the weight is what got me. this is not a plastic toy. feels like precision equipment. dial is smooth as butter

    Grant
  • ★★★★★
    ✓ Verified buyer

    real product

    came genuine and sealed. thats all I wanted. so many gray market listings out there and this one was the real deal. thank u

    Reid B.
  • ★★★★★
    ✓ Verified buyer

    Exactly what I needed. fast shipping!!

    Caleb C.
  • ★★★★★
    ✓ Verified buyer

    clicks are loud and clear

    you can literally count the clicks without even looking. each one is a number. super handy when Im showing someone how it works on the bench.

    Andre D.
  • ★★★★★
    ✓ Verified buyer

    Not gonna lie I bought a couple of these for the lab and they all feel identical. Same click same fit. Consistent which matters when youre demoing to people.

    Priya
  • ★★★★★
    ✓ Verified buyer

    genuine and sealed

    Was nervous about getting some gray market overseas thing but this came sealed and genuine, shipped from the US. very relieved and its a great pen

    Milo A.
  • ★★★★★
    ✓ Verified buyer

    fast US shipping

    ordered monday had it wednesday. shipped from the US not sitting on a boat somewhere. arrived sealed. cant complain at all

    Fern
  • ★★★★★
    ✓ Verified buyer

    stiff out of the box

    works good. dial was pretty stiff the first day but its fine now. clicks nice and reads easy

    Rosa
  • ★★★★★
    ✓ Verified buyer

    beautiful piece

    Honestly its kind of beautiful. the machining is clean and the numbers line up perfect in the window. very happy customer

    Nora A.
  • ★★★★★
    ✓ Verified buyer

    grip is a bit slick

    Solid build and it works well. The barrel is a touch slick when my hands are dry so I grip it careful. Not a dealbreaker just noting it. Shipping was quick.

    Dean
  • ★★★★★
    ✓ Verified buyer

    dial a dose is the way. so much cleaner than what i had. clicks nice. shipping was quick too

    Ivy A.
  • ★★★★★
    ✓ Verified buyer

    precise

    you can dial an exact number every time. thats what I care about. repeatable and no guessing. great little instrument.

    Jade B.
  • ★★★★★
    ✓ Verified buyer

    arrived in 2 days!! sealed and everything. the metal is cool to the touch and it feels really well made

    Ravi
  • ★★★★★
    ✓ Verified buyer

    So glad I switched

    So glad I finally got one of these. I was tired of the pile of used syringes stacking up on my bench. This is reusable metal and I just refill it. much cleaner setup now.

    Tate B.
  • ★★★★★
    ✓ Verified buyer

    great but wanted 2

    Good pen. only thing is i wish it came with a spare. ended up ordering a second one anyway. build is top notch

    Devin A.
  • ★★★★★
    ✓ Verified buyer

    no more syringe mess

    Whole reason I bought this was to stop dealing with the syringe draw and reading tiny lines. does the job perfect. dial and go.

    Tate C.
  • ★★★★★
    ✓ Verified buyer

    wish the numbers were bigger

    The pen itself is fine and machined well. My only real gripe is the numbers on the dial are kinda small and I have to hold it close to read them. Bigger print would help alot. Otherwise ok.

    Sara
    Preppin’ Peppers replied

    Thanks there. Honest feedback like this is gold for us. We are on it for future orders, and we are always here at [email protected] if you ever need anything.

  • ★★★★★
    ✓ Verified buyer

    not gonna lie i was worried it would feel cheap but nope. its got real heft. the click is crisp

    Iris C.
  • ★★★★★
    ✓ Verified buyer

    quality metal pen. feels like a real tool not a throwaway plastic thing. worth it

    Suki A.
  • ★★★★★
    ✓ Verified buyer

    takes standard glass

    Big thing for me was no proprietary cartridge lock in. It takes a standard 3ml glass cartridge so I'm not stuck buying one brand forever. exactly what the listing said.

    Erin
  • ★★★★★
    ✓ Verified buyer

    solid build

    Feels like a real instrument. metal body, nice knurling on the grip. dials clean with a firm click each unit.

    Blake C.
  • ★★★★★
    ✓ Verified buyer

    Genuine sealed product arrived fast. seller answered my question same day. cant ask for more than that

    Amir A.
  • ★★★★★
    ✓ Verified buyer

    sealed and genuine

    Was nervous about getting some overseas knockoff but this came sealed in genuine US packaging. Everything looked legit. Seller answered my question about it too before I ordered.

    Sami A.
  • ★★★★★
    ✓ Verified buyer

    wish instructions were clearer

    Pen itself is good but the instructions were pretty thin. took me a while to figure out the priming. once i got it its fine.

    Nora
    Preppin’ Peppers replied

    Appreciate the honest feedback, Kevin. We have flagged this to the team so we can tighten it up on future units. Thanks for giving us a fair shot.

  • ★★★★★
    ✓ Verified buyer

    no more tiny syringe lines

    honestly the best part is not squinting at those little syringe lines anymore. you just dial the number and thats it. wayyy easier on my eyes at the bench.

    Esme
  • ★★★★★
    ✓ Verified buyer

    loveee it

    loveee this pen honestly. its heavy and cold and just feels expensive. worth every penny

    Wade C.
  • ★★★★★
    ✓ Verified buyer

    good but dial is stiff

    Works great overall and the build is nice. Only thing is the dial is a little stiff turning up to the higher numbers. Might loosen up with use idk. Still glad I got it.

    Mona A.
  • ★★★★★
    ✓ Verified buyer

    Does exactly what I wanted. no more squinting. the numbers are big and clear and it clicks per unit.

    Grant D.
  • ★★★★★
    ✓ Verified buyer

    Sooo happy with this. shipping was fast, came in a nice box. dialing an exact number is way easier than eyeballing a syringe

    Erik
  • ★★★★★
    ✓ Verified buyer

    The dial click is so satisfying. You can hear each number lock in. No mushy feeling at all. LOVE that.

    Elena C.
  • ★★★★★
    ✓ Verified buyer

    quality machined pen

    You can tell this is machined metal and not throwaway junk. weight feels premium. takes standard 3ml glass which was the whole reason i got it, no proprietary lock in.

    Cleo B.
  • ★★★★★
    ✓ Verified buyer

    heavy in a good way

    Ok so I was not expecting it to feel this solid. The whole thing is metal and it has real weight to it. Sits nice on the bench and doesnt roll around. Very happy.

    Glenn C.
  • ★★★★★
    ✓ Verified buyer

    dial is a lil stiff

    Works great overall but the dial is kinda stiff the first few turns. loosened up after a bit. still happy with it.

    Sara
  • ★★★★★
    ✓ Verified buyer

    does what i needed

    does exactly what i wanted. fast shipping!

    Silas A.
  • ★★★★★
    ✓ Verified buyer

    Bought this because I was done with the pile of used syringes on my bench. dials smooth and the number window is easy to read. love it

    Kevin
  • ★★★★★
    ✓ Verified buyer

    click is satisfying

    ok the little click when you dial is weirdly satisfying lol. arrived in 2 days sealed up nice. no complaints

    Gage
  • ★★★★★
    ✓ Verified buyer

    This thing is SO much better than what I was using before. heavier than I expected in a good way, feels like actual metal not cheap plastic.

    Dana B.
  • ★★★★★
    ✓ Verified buyer

    finally

    So glad I found this. Tired of the syringe draw and squinting at those tiny lines. You just dial the number and thats it. build feels solid too.

    Naveen C.

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