【Heavy Duty Indoor and Outdoor Large Padlock】Large heavy duty size is 52 x 26 x 84.5mm (L x W x H), 8 mm diameter lock ring, 270g weight, with one-piece lock body, 304 stainless steel lock beam. Highest security combination lock 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 Weatherproof】Waterproof combination padlock is made of high-strength zinc alloy, rust-proof and weather-resistant. The padlock is made of zinc body and reinforced bumper for high strength and reliability, and the hardened 304 stainless steel lock ring is cut-resistant. After more than 180 hours of salt spray test, it has proven its resistance to harsh conditions 【4-digit combination lock】Unlike the 3-digit combination, it provides 10000 code combinations, which is stronger and more secure than the previous version. In addition, the 4-digit metal combination wheel makes the latch of this lock strong enough to be removed or cracked manually. You don't have to worry about security anymore. 【One-button lock design】The combination padlock looks unique, convenient and ceremonial, because after setting the 4 codes, just press the middle button to pop up the hook. 【Hidden password and anti-error design】The password is located at the bottom of the lock, which enhances concealment. To change the password, you need to unscrew the screw, 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 the password due to inadvertent changes to the password