ROBUST AND SECURE 4-DIGIT COMBINATION LOCK: This bicycle lock uses newly developed high strength iron materials and PVC, which is three times as strong compared to conventional locks when it comes to cuts and durability STURDY AND DURABLE CONSTRUCTION: The high security bicycle lock is made of iron which is drill-resistant and anti-tech unlocking, featuring strong shear and corrosion resistance 180CM LONG AND TOUGH RELIABLE DESIGN: This lock measures 180cm in length, longer than most common locks on the market, allowing you to secure multiple items including bicycles, motorbikes, toolboxes, street lights, and fences without worrying about insufficient length. The 12mm thickness and newly developed high-strength alloy materials ensure maximum toughness FLEXIBLE WIRE AND COIL ROPE DESIGN: The curly design allows the original 180cm rope length to be reduced to a compact size for easy storage, while also being able to elongate according to the situation to lock large items EASY PASSWORD RESET INSTRUCTIONS: First, open the lock with your current code aligned to reference marks and pull out the lock cylinder. Second, turn the reset collar clockwise until it stops. Third, set your new combination ensuring each key is aligned with the markings. Fourth, turn the reset collar counter-clockwise until it stops to complete the reset process VERSATILE SECURITY SOLUTION: Suitable for securing various items including e-bikes, scooters, skateboards, gates, and doors with its 1800mm length and 12mm diameter cable providing comprehensive protection, Weight: 0.95680621708 Pounds, Manufacturer: Linyi Lanshan District Shanhuan Lock Factory