This padlock is made of aluminum alloy, it is and waterproof. It has a longer service life than other locks. This alarm lock has a that triggers an alarm that emits loud sound when locked or shaken, making it great for avoiding theft. It is a choice for you. Features - Color: Black. - Material: Aluminum alloy. - Size: About 10.00X9.50X3.20cm/3.93X3.73X1.26inch. - Made of durable aluminum alloy material, it . - We can easily carry this anti-theft padlock because of its compact size design. - , you can buy this practical product at an . - The package contains 6 keys, 2 padlocks and 12 button batteries for your convenience. - It is widely used to prevent theft of doors and windows, cabinets, bikes, motorcycles, etc. Package list: 2 x Security Alarm Locks 6 x Keys 12 x Electronics