1、Aluminum Material: 6 pin cylinder using aluminum alloy material, which is environmentally protective and rust proof. 2、Combined Use: Can be used in conjunction with a notched locking device for a safety door, providing double security. 3、Core Principle: Adopts the principle of multi directional lock core and uses a variety of mechanical structures to prevent the almighty key to unlock. 4、Effective Performance: Has anti theft function, can effectively improve the reliability and security of locks, is your first choice for safety. 5、Reliable and Convenient: Has passed 100,000 loop test, and the core will come with 3 keys and 1 fixing screw, convenient for users. Item Type: Cylinder Lock Material: Aluminium Alloy Application: For Door, Cabinet, Mailbox, Drawer, Cupboard Product Size: Approx.69x29mm/2.7x1.1in Weight: Approx.113g/4.0oz 1 x Door Lock Core 3 x Key 1 x Screw