Insulin keychain The beautiful and useful protein Insulin, drawn in 3D at pocket size.  Our high-resolution laser that captures every detail down to the central ions. This keychain has a long-lasting white LED, replaceable battery, and split keyring.  The crystal is 30 x 20 x 15mm. A larger Insulin model is here.

	Two Insulin keychains - $16 This crystal is temporarily out of stock, orders will resume shipping November 1. Thanks for your patience! Need 25 or more?  Please write.