NO KEY REQUIRED: The steering wheel lock helps you eliminate the worry of forgetting to bring your keys. It has high privacy performance. The number of password combinations can reach 100,000. No one could open it except you. Anti-lost key, anti-universal key. Environmental protection material: It is made of environmentally friendly aluminum alloy with good mechanical properties and wear resistance, which can withstand various outdoor environments and has a wide range of uses. The cipher wheel is made of high-quality rubber, without any gaps, and is very strong and durable. Complete mechanical structure: the whole lock body is made of reinforced alloy, which is anti-shearing , anti-drill, anti-saw and anti-burglary. The set is made of hard steel, strong and wear-resistant. The mechanical code lock is relatively stable, durable, solid and reliable. Simple operation: relatively short unlock time, convenient and quick to use. It is easy to set the password (user manual). When locked, it cannot be opened or changed the password by others. It's safe.