1. Solid metal material: lock buckle is made of zinc alloy and iron, thickened and reinforced base, durable anti-theft lock core, surface electroplating process, smooth without burrs, rust, corrosion resistance, guaranteed product quality and long service life.< br> 2. Built-in lock cylinder buckle: Equipped with automatic hidden button lock, it only needs to be rotated 90 degrees to lock, no additional lock is required, which is very convenient. The edges of the padlock are very smooth and will not scratch your hands 3. Hidden screw design: Using a key lock, the operation is similar to a traditional buckle lock. When the buckle is closed, it is in the locked position. The buckle can hide the 4 screws at the bottom, which can effectively prevent disassembly or theft. Security can be improved. 4. Easy to install and use: First determine the installation position, and then fix the screws to the screw holes. Cover the locking buckle and rotate it 90 degrees to lock it. You can rotate the