1、Parameter: With a size about 4in and a width of 40mm, and the key can be pulled out in both closed and opened states, reducing the risk of key loss and making operation more convenient. 2、Material: Zinc alloy material, the surface is bright, beautiful, waterproof, smooth edges, rounded corners are not easy to scratch, collision avoidance which is more safer. 3、Practical: Simple operation, screw on to lock, rotate in the opposite direction to unlock, safe, anti theft, durable and strong, perfect for keeping your small items safe. 4、Unique Design: Adopts thickened material, with reinforced base, anti violence removal, quite durable, but do not place the product in an environment that is humid and hot. 5、Application: Can be installed in drawers, envelope boxes, cabinet doors and other places, compact design, will not occupy much space, equipped screws will make installation simpler.