Set includes( safety black silver razors ):Heavy-duty butterfly style black electroplated butterfly style razor (4.25? size).Heavy-duty butterfly style silver alloy chrome electroplated butterfly style razor (3.5? size).These old fashion classic safety black silver razors opening mechanism works by turning/twisting knob and the entire bottom part will come apart/open, insert a new blade and then firmly close to secure the blade (each comes in a beautifully designed mirrored gift box packing).10pcs double edge razor blades(2packs).Great for personal use household use, hair salons and barbershops.Excellent gift set.