Set Your Own Lock Combination: The 4 number combination lock takes 10 times longer to crack than a 3 digit lock. You can set any combination with 10000 unique choices that you know they are more reliable and safer. Easy to Use: Setting or Resetting is easy following the instructions which are always included. Large numbers and the side window design make it clear and effortless to lock and unlock in daily use. Sturdy Construction: The heavy duty combianation locks come with high strength zinc alloy bodies, hardened steel shackles and excellent caft manship. They are weatherproof, anti-rust and resistant to cutting and sawing. They are designed to be the most durable dial combination locks for you. Wide Application: The combination padlocks are perfect for both indoor and outdoor tasks such as gym lockers, school employee lockers, canbinets, pantries, toolboxes, gate door hasps, garages, sheds, fences and general storage.