Feather Brand Sterile Poly Scalpels with #21 Blade. Single use stainless steel blade mounted to a durable plastic handle, about 6.5" overall length. Sterilized by GAMMA radiation 25kGy. Foil wrapped to prevent rusting. Sterility guaranteed unless package has been damaged or seal is broken. New, old stock. MPN 9422. Box contains 20 scalpels.