1. INCREASED SECURITY: With a reinforced lock body made of durable material, our bike combination lock resists cutting and drilling, ensuring greater security. Its 4digit code mechanism provides over 10,000 possible combinations, keeping your bike safe from theft. 2. SAFETY : Our bicycle combination lock offers maximum protection with a 0.24inch alloy steel chain and a zinc alloy lock core. It is resistant to picking and technical unlocking, ensuring your bike stays secure even in risk areas. The sturdy and durable design guarantees a worry ride. 3. ENHANCED DURABILITY: Shield your bike lock from scratches and damage on bike racks with the thick nylon fabric sleeve. This sleeve is not only wearresistant and heatresistant but also extends the lock's lifespan. 4. EASY OPERATION: Secure your belongings effortlessly with our digital password chain lock. Measuring approximately 3.9 feet in length, this lock is ideal for protecting various items, from bicycles and scooters to barbecues and ladders. It can even lock 2 or 3 bikes simultaneously, including motorcycles.