Thirty-vial capacity in premium Silk PLA filament - our most storage, in our most premium finish. Keeps a full peptide library sorted, cushioned, and cold in a single hard case, at home or on the road.
 
Not finding the color / combo or size you would like? Shoot us an email at info@refillpen.com
 
Because of the 3D printing process, slight differences in the finish may occur.