Product specifications:

American Standard strap 20-piece knife

European-style strap 20-piece knife

British standard strap 20-piece knife

Australian Standard strap 20-piece knife

USB strap 20-piece knife

Metal single-pole USB

Metal single knife American Standard

Metal single knife European standard

Metal single knife British Standard

Metal Single-knife Austrian gauge

USB upgrade four-piece plastic knife

Metal single knife + plastic four-piece knife USB