Recodable and Keyless SecurityWith our 4-wheel recodable combination lock bolt, you can choose your favorite code from 10,000 different combinations. And the code can be called smoothly. Security comes with easesetting and resetting your combination code without any hassle. You don't need to bring a lot of keys and replace locks as it uses a digital password method. Waterproof and durable zinc alloy materialThe bolt code lock is made of zinc alloy and it is durable and weatherproof all year round, the body has a rust-resistant coating so that it is waterproof and the dialsbarrel bolts are chrome plated. The combination slide lock comes complete with pick resistant dials, a 10mm diameter solid steel slide bolt and one way security screws. 2 installation methodsLock sleeve installation: When the door frame and the door are on the same plane, the metal sleeve and bolt installation method is adopted. Installation of the side door: when the frameof the door and the door are at a right angle of 90, the installation method of the side door buckle and bolt is used, and the door frame must be opened by a hole. Easy to useAs for unlocking, you can dial the password and pull the handle up to open the door lock code. And closing the lock, you can dial the passward, move the handledown, insert the pin into the keyhole, then dial the password, the shed lock is locked. After unlocking, be sure to dial the password in time to avoid accidental locking. Wide ApplicationWith dimensions of 4.76 x 1.81 x 1.57 inches, the combination door code bolt is easy to install and mount in the most compact space. From protecting your sheds, barns, cabinets, doors, iron gates, gateswood, fences or windows. It's the perfect locking choice for both indoor and outdoor environments.