SET YOUR OWN COMBINATION: The 4-digit combination lock is ten times harder to crack than a 3-digit one. You can set any combination with 10000 unique choices. EASY TO USE: The padlock combination lock is equipped with an advanced dampening device that clicks with each dial to improve code alignment accuracy and feel. Large numbers and side windows make reading easier. 6 steps only to set and reset. See the back of the packing carton for instructions. STRONG CONSTRUCTION: With high-strength zinc alloy body, hardened steel shackle and excellent workmanship, the lock is weatherproof, rustproof and highly resistant to cutting and sawing. WIDE APPLICATION: The padlock is perfect for indoor and outdoor use as a gym combination lock, school and employee lock, for cupboards and tool boxes, weatherproof padlock for gates and doors, garages, sheds, fences, etc.