Description:[Anti-wear Pad] Window and door locks, 4 pieces per set, with matching anti-wear pads to prevent direct contact with windows and doors[Easy to Assemble] with matching screws - mark the position of the mounting holes with a pen before installation, drill holes in the marked positions, and then fix the lock with screws. When installing, the window needs to be closed to confirm the gap between the window frame and the sash, and gaskets and anti-friction pads should be selected according to the size of the gap.[Easy to Operate] Snap-on lock, more convenient to use. When using the window anti-theft lock, you only need to turn it to lock or release the window sash, prevent children from opening the window[Application Range] The flat lock blocker is sui.