Malins exclusive safety wire canister is molded from high density polyethylene. Unlike standard paper canisters, Malin’s Lockwire Dispensing Canisters won’t degrade and they will keep your safety wire free of grease and other corrosive materials. Plus they are recyclable! Malins Stainless Lockwire / Safety Wire meets NASM / MS20995C and ASTM A580 specifications. (Stainless steel type 302/304)