Usage Tips: The large heavy duty padlock features a one-piece lock body, 304 stainless steel shackle, a lock body width of 53mm, a latch diameter of 8mm, and weighs 270 grams. This high-security combination lock is suitable for indoor and outdoor use on gates, garages, sheds, fences, warehouses, schools, gyms, employee offices, and more. It provides enhanced protection against theft. Weather resistant design made from high-strength zinc alloy with rust-proof and weather-resistant properties. The lock has a zinc alloy body with a reinforced bumper for durability and reliability, along with a hardened 304 stainless steel shackle for increased cut resistance. Tested for over 180 hours in salt spray to verify performance in harsh environments. Equipped with a 4-digit combination mechanism offering 10,000 possible combinations, providing greater security than 3-digit models. The metal dial wheels are durable and resistant to tampering or forced removal. Features a one-touch locking mechanism. After setting the correct 4-digit code, press the center button to release the shackle. The resettable combination is located at the bottom of the lock for improved privacy. To change the code, remove the screw, push up the SET button, then set a new combination. This helps prevent accidental resetting and ensures reliable access.