The item is a professional and practical 5-digit safety coded chain , which is mainly made of durable hard steel, ABS plastic and nylon materials, and adopts 5-digits personalized combination password settings for your motorcycle, mountain bike, road bike and common without any keys. Besides, its password can be resettable according to your own needs. Features - Brand: . - Color: mainly black. - Material: durable hard manganese steel, ABS plastic and nylon. - Size (Dia.*L): about 6mm*900mm. - and Motorcycle Mountain Bike 5-Digit Anti-theft Safety Coded Combination Password Steel Chain Cable . - 5-digits coded combination password , for motorcycles, mountain bikes, road bikes, common bikes, baby carts, etc. - Easy, effective and convenient to use. - Easy to reset the password of the bike according to your own needs. - Portable size and sturdy structure, easy to use and carry. How to Set the New Password 1. Open the by the original password of 00000. 2. Rotate the knob as clockwise by 90-degree. 3. Set up a new password. 4. Turn knob back to the original position. Package list: 2 * Professional Motorcycle Mountain Bike 5-Digit Anti-theft Safety Coded Lock Combination Password Lock Steel Chain Cable Lock (Black)