Keyless Combination Lock, 4-digit digital door lock offers 10,000 different combinations, providing more security and convenience than traditional sliding door lock. This door lock is made of zinc alloy and solid lock cylinder that can withstand harsh weather conditions and violent destruction. The coded door lock features a one-way stainless steel screw, a tamper-proof solid cylinder, a lock cylinder and a porous design that provides the installer with many options, such as flush mounting, which can be easily changed according to the installation location. The sliding bolt combination lock is suitable for gates, fences, cabinets, sheds, closet doors, window bars, bedrooms, garages and barn doors, etc. Flat bottom design model, the bottom is a solid steel plate welding process, strong and solid