Robust:The portable padlock consists of a high quality ABS case, a zinc alloy body and a strong hardened steel shackle which is waterproof, rustproof, corrosive. paint and very resistant to cuts and tears. The combination padlock can be tested under salt spray for 100 hours, equivalent to 4 years of exposure to the natural environment, to prove its resistance to harsh conditions. [More secure design and foolproof operation] The 4-digit combination padlock offers 10,000 combination codes for better protection of your belongings than 3-digit combination padlocks. The locker padlock is equipped with an advanced error-proof revision tool. Redefining your own combinations is simple and easy. Borrowing the password change tool effectively prevents incorrect password change operations. [Convenient and easy to read] Weighing 215 grams and measuring 4.09*1.9*0 .78 inches, the external padlock is compact and easy to store and carry, eliminating the need to carry keys with you, this combination padlock will be your essential travel companion. The large numbers and front design of this combination padlock make it easy to read. Very easy to use for the elderly. The small combination padlock is the perfect gift for family and friends. [Multi-functional padlock] The waterproof padlock is perfect for indoor and outdoor use, suitable for doors, cabinets, windows, wardrobes, fences, buckles, chains, sheds, storage rooms, garages, tool boxes, luggage, schools, gyms, staff lockers and much more. Note: The lock beam is 8mm in diameter, please make sure your keyhole is over 8mm in diameter, otherwise you can't use it.