Strong zinc alloy lock body enhances durability, brass lock cylinder meet your different installation needs and protect your home security. provides smooth and safe operation, long-lasting performance and protection for your garage. made of solid pure copper have the functions of Anti-picking, Anti-drilling, Anti-snap, Anti-Bumping, and also fireproof characteristic. The lock cylinder can be adapted to most door types, including wooden doors, metal doors, UPVC doors, inner doors, front doors and most doors with keyholes.