These PetTest/Genteel Butterfly Touch Dog & Cat Lancets are the perfect lancet for use with the PetTest Genteel Lancing Device (sold separately). These lancets feature patent pending tri-beveled angle tip ranges from 30g to 36g and provide a robust pain free lancing experience. This means that even pets with thicker skin can get the right amount of blood for testing, while still using a thinner gauge lancet to avoid any unnecessary pain to your fur baby.