Long service life: The door lock adopts powder metallurgy material, the friction coefficient between the material surfaces is small, the service life is long, and the reliability is good. Safety protection: The lock cylinder has been fully upgraded, with safety protection, can be opened 100,000 times, and has a long service life. Copper lock cylinder: The lock cylinder Lock is made of high-quality copper, which has strong corrosion resistance, is not easy to rust, and is durable. Scope of application: This lock cylinder is durable, safe and anti-theft. It can be installed on wooden or aluminum doors to protect the security of rooms and homes. Solid structure: The door lock has a solid brass structure and a single open door, which greatly improves the anti-theft and ease of use of the lock core. Size: about 70mm long Color: Gold Quantity: 1 piece