Feature: 1. Applicable System: This bike chain is applicable to various 10 speed, 2 x 10 speed and 3 x 10 speed transmission systems. 2. External Chamfer Design: This chain adopts external chamfer design to avoid teeth interference of the chain, and make operation smoother. 3. High Strength: Embedded with high strength axes, high rigidity reinforced structure, tight, flexible and not stuck, bearing high treading force. 4. Replacement Parts: This variable speed chain can be used as a repair part to replace the damaged original parts and prolong the life of the bike. 5. Simple Installation: This bike replacement chain can be installed easily, and is a good choice for light weight matching or long distance riding. Specification: Item Type: Bike Chain Material: Alloy Steel Gross Weight: 330g / 11.6oz . Package List: 1 x Chain 2 x Buckle1 x Storage Box