Commando Lock Peacemaker Series - 44CZ Commercial Lock, Silver Zinc Plated (44 millimeters) Solidbody Tek interlocked and riveted steel plate construction for strong assembly Chamfered rivet holes prohibit lock fracture from chiseling the rivet heads off Dual hardened stainless steel ball-locking mechanism defends against prying and hammer blows, and cannot be shimmed or bypassed Commando high-security 5-pin cylinder with anti-bump technology and up to 10 security pins prevents lockpicking Over 12,000 unique key combinations for maximum security