HIGH SECURITY: The 4 digit combination padlock provides 10,000 combinations with all wheels tightly fixed to make decoding impossible. 7mm-thick hardened steel shackle and high-strength zinc alloy body, are of high resistance to cutting and sawing. 12 mm of the shackle is locked inside the lock body while in use, far longer and securer than most combination locks in the market. It is a solid, heavy duty locker padlock. EASY TO SET: The combination locker padlock allow setting your own combination by simply flipping a "SET" switch at the bottom and back. The four number wheels are exposed front and back, making it much easier to turn, even with gloves on. Each dialing is designed to click into place with accuracy and suitable feeling for code aligning. ANTI-MISOPERATION DESIGN: Most combination lock on the market have their setting mechanism exposed outside, in which accidental code setting could happen randomly in daily use, when carried in a bag or someone plays with the locker locks and make them useless. Thus ZHEGE adopts the anti-misoperation design in 2021 by adding a black protection cover to the reset button. No longer worry about unknown code changing.