【Super Security and Anti-Theft】 4-digit passwords provide 10,000 password combinations, which improve security and better protect your personal belongings. You can set any number combination as your password. 【High-quality materials and sturdy construction】 The padlock is made of high-quality zinc alloy. The shackle of the padlock is made of stainless steel, which does not rust and is corrosion-resistant. It is the most durable and secure padlock. 【Sturdy padlocks】 Our set includes 4 combination locks. Each padlock opens and closes with a digital code, so you don't have to carry a key with you. Each lock can be used indoors and outdoors and is rust and weather resistant, heat resistant and will not tarnish. 【Easy to Use】The padlock code lock is equipped with an advanced damping device that locks each lock at the time you choose to improve accuracy and sense of code alignment. Large numbers and side windows make it easy to read. To set and reset, just follow the 6 steps in Figure 7.