
Cartridges & refills
Spacers for Cartridges - 5 Count
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Universal injection-pen spacers that eliminate the 'dead space' at the bottom of a standard cartridge — they nudge the stopper higher so your pen can draw out every last bit. Sold 5 for $1.99. Made for the V1, V2.5 and V3. These three models have a longer cartridge holder, so the pen's plunger stops just short of the bottom of the cartridge. A spacer closes that gap, letting the plunger push the stopper the full distance so none of your cartridge goes to waste.
How to use a spacer

Prep your cartridge as usual.

Place the spacer right on top of the grey rubber stopper.

Slide the cartridge into the cartridge holder, metal cap end first — the spacer end faces the pen.

Screw the holder onto your pen.

The plunger pushes the spacer, the spacer pushes the stopper further up — so you can use the last remaining liquid.
Use every last drop: a spacer lets your pen push the stopper all the way.
After your cartridge is completely prepped, place the spacer at the bottom of your cartridge right on top of the Grey Rubber Stopper. This will allow the plunger to push the Grey Rubber Stopper further up, making it easier to access the last remaining liquid in your cartridge.
Common questions
How do I use a spacer?
Once your cartridge is completely prepped, place a spacer at the bottom of the cartridge, right on top of the grey rubber stopper.
Which pens do spacers work with?
Spacers are designed for the V1, V2.5 and V3. Their longer cartridge holder means the plunger stops just short of the end of the cartridge; a spacer makes up the difference so the stopper travels all the way and you can use the last of the liquid.
Why use one?
It clears the dead space at the bottom of the cartridge so your pen can draw out every last bit instead of leaving solution behind.
Reviews
Got a few compliments of Refillpen when I got a faulty pen. These are excellent for ensuring you get every drop of product from the vial. Thank you!
Neat idea
Love them!!
Complete your setup
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V1 Peptide Pen (Closed Cap)
Slim aluminum pen with the widest range — up to 80 units per pull.
Color: Neptune

V2.5 Peptide Pen (Slim Hybrid, Open Cap)
The comfort pick: slim and light, with the needle hidden as you inject.
Color: Sterling Slim

V3 Peptide Pen (Closed Cap)
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3ml Individually Packed Glass Cartridge For Pen
The $1 sterilized 3 mL glass refill that fits every RefillPen.

