Waterproof Waterproof ShellThe locks are fully wrapped with waterproof plastic shell, no dead corners. Waterproof and dustproof to protect the locking mechanism, ideal for use as outdoor locks. Shell wrapped with wear-resistant plastic, at the same time can avoid scratches, durable. Multi-layer layering technology A total of 22 layers of zinc-plated locks are layered and fixed with 8 rivets. After impact, drop, collision and other experiences, it is still intact and can effectively withstand violent damage. Safety lock cylinder The internal structure is precise and the part of lock between the lock beam and the lock body is very thick, which is anti-pick. Positive and negative slotted structure inner cylinder, inner 4-pin cylinder increasing the specific density of the tooth, improving the difficulty of cracking. 2 pieces, 4 keys Size: 40 mm, diameter of the handle: 7 mm. Two fully sealed heavy duty laminated steel padlocks are more economical to purchase. 4 keys, each padlock with 2 keys, don't worry no spare keys. Note: Each of these four keys can open the two locks of the package Best for outdoor use Wide range of applications. Can be used indoors and outdoors. It is very suitable for lockers, garden gate fences, garages, tool boxes and other places.