Heavy Duty Indoor and Outdoor Large PadlockOur large heavy duty size is 52 x 26 x 84.5mm (L x W x H), 8 mm diameter shackle, 270g weight, with one-piece lock body, 304 stainless steel lock beam. The highest security combination lock is designed for indoor and outdoor use, such as gates, garages, sheds, fences, warehouses, schools, gyms, employee offices, etc. Provides better anti-theft protection and security [Please note that the diameter of the lock ring is suitable for your locker] High Quality and WeatherproofThe waterproof combination padlock is made of high-strength zinc alloy, which is rust-proof and weatherproof. The padlock is made of zinc body and reinforced body bumper for high strength and reliability, and the hardened 304 stainless steel lock ring is cut-resistant. It has been subjected to salt spray tests for more than 180 hours to prove its resistance to harsh conditions [4-digit combination lock] Unlike the 3-digit combination, it offers 10,000 code combinations, which is stronger and safer than previous versions. In addition, with a 4-digit metal combination wheel, the latch of this lock is strong enough and cannot be removed or cracked manually. No need to worry about security issues anymore [One-button lock design] The password padlock has a unique appearance. After setting the 4-digit password, press the middle button to pop up the hook, which is convenient and ceremonial. [Hidden password error-proofing design] The password is located at the bottom of the lock, which enhances concealment. To change the password, you need to unscrew the screws and push the setting key up to see the SET key, and then reset the password. This can effectively avoid the problem of being unable to open due to accidental password changes.