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Great quality cartridges! Super easy to fill, and the plunger moves smoothly for precise dosing. Knowing they come individually sealed in sterilization pouches gives total peace of mind for daily medical/peptide use.

Harry B.United States

These 3ml pen cartridges are exactly what I needed. The sterile packaging was intact, and the glass construction feels durable and premium. It fits perfectly in my pen device without any leaks or rubber stopper issues. Highly recommend!

Sofia L.Verified 3ML Pen Cartridge customer

Solid build quality and clear glass. The seal on the rubber stopper is tight and secure, so there's no fear of contamination. Fits standard 3ml injector pens seamlessly. Will definitely order again!

Manuel N.UK

Keeps vials clean & organized

TRUSTED BY 30,000 PEPTIDE USERS WORLDWIDE

3ML Pen Cartridge

Fits 3ml, 5ml, 10ml
Leak Proof
Durable
Air Tight Seal
BPA Free
Keeps Vials Clean

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Product Description

Keep your vial tops covered and your collection organized with PeptiCool Vial Caps. Made from durable, BPA-free plastic, these reusable caps provide a snug, airtight fit.

6-pack: 3 caps for 3mL vials + 3 caps for 5mL and 10mL vials
Durable, BPA-free plastic for everyday use
Snug, airtight fit helps keep dust off vial tops
Color-coded design makes vials easy to tell apart
Reusable and easy to put on and remove

Why use vial caps?

PeptiCool vial caps help shield vial tops from dust and everyday contact while keeping your collection organized. Easy to put on and remove, their distinct colors make it simple to tell your vials apart—at home or on the go.

Processing & Shipping

Please allow 1-2 Business Days for us to process and ship your order. Estimated Arrival Time: 7-12 business days.