Description:Thickened steel cable and scratch-resistant shell make the bike anti-theft and safe.Waterproof and dustproof characteristics make the lock not easy to rust and have long service life.Lock body is made of steel, PVC and ABS, and the lock core is made of zinc alloy. 4 digit password has 10,000 kinds of arrangements, which has anti-technical unlocking and high security.The length of the product is 14cm and the width is 13cm. The ring roughness is 11.5cm.It is suitable for mountain bike, road bike, etc. It can be interlocked with the same style and combined with multiple sections.Item Name: Bicycle Ring LockMaterial:Steel,PVC,ABS,Zinc AlloyPassword: 4 Digit CodeSize Details:14cm x 13cm/5.51" x 5.12" (Approx.)Length(with Lock): 40cm/15.75", Ring Roughness: 11.5cm/4.53" (Approx.)Notes:Due to the light and screen setting difference, the product's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Bicycle Ring Lock