Welcome to ZTTO Official Store! We specialize in selling bicycle accessories, if you need it, you can pay attention to us! Item Name: Chain Buckles Material: Steel Features: Reusable, Portable, Durable, Maintenance Kit Color: Silver Color Specifications: 6s, 7s, 8s, 9s, 10s, 11s Size Details: 2cm x 0.7cm x 0.5cm/0.79" x 0.28" x 0.20" (Approx.) Description: This buckle is easy to disassemble and assemble, convenient for maintenance and installation, and helps reduce chain breakage caused by improperly driven chain pins. When you remove the chain or clean the chain, you can pull the chain off with just one buckle, which is very convenient. Made of steel material, the product is durable. The length of the product is 2cm, the width is 0.7cm, and the thickness is 0.5cm. It is suitable for 6/7/8/9/10/11 speed bicycle chain. 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. The speed of the chain and the buckle depends on the number of rows of teeth on the rear flywheel of the car. If there are 7 rows, it is 7 speed, 10 rows is 10 speed, and so on. Package Includes: 2 x Chain Buckles