Compared with other similar products, this product is a 4-digit combination chain lock, so it can protect your precious bike from stealing. Additionally, the combination lock code can be easily set-up, easy to use. As a great accessory for any bike, our high-security bicycle chain lock is cut resistant, durable, waterproof, rustproof, shatterproof and shear resistant. Great for motorcycle, scooter, skateboard, MTB, road bike and so on. It is made of high-quality zinc alloy, polypropylene and cloth material. There are 4 different sizes to choose from. This product is perfectly suitable for mountain bike, road bike, MTB and so on. Item Name: Bicycle Chain Lock Material: Zinc Alloy, Polypropylene, Cloth Features: High Hardness, Universal, Four-digit, Durable Size Details: S Length: 65cm or 25.59" (Approx.) M Length: 90cm or 35.43" (Approx.) L Length: 115cm or 45.28" (Approx.) XL Length: 150cm or 59.06" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bicycle Chain Lock Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.