Features: Made of zinc alloy material, strong, precision, safe and durable. Suitable for cabinet thickness between 0.5mm to 12mm. The installation hole can be 19 * 15.8mm. Easy and convenient to install, screw is not required. The lock can be set 1- 15 digit combination. The original dial set to 1-2-3-4. Ideal for tool boxes, cabinets, drawers, mail box, school lockers or any where keys are not suitable.