Features: 1Smooth Shifting: The outer chamfer design prevents the teeth from interfering with the chain to shift more smoothly. Applicable to all types of 10 speed, 2x10 speed and 3x10 speed drive system. 2Reinforced and Flexible: Embedded with high strength axle center, the bicycle chain has a high rigidity reinforced structure, tight, flexible and not stuck, and can withstand high treading force. 3Full Hollow: 10 speed bicycle chain adopts a precise hollow design, which can reduce the overall weight of the bike while ensure the strength. 4Alloy Steel: Bike speed chain is made of alloy steel with high hardness and high strength, rustproof, durable, greatly enhancing service life of your bike. 5Applications: 10 speed bike chain is suitable for most bicycles, mountain bikes, road bikes, etc. Perfect bike replacement part for long time and long distance riding. Package included: 1 x Bike Chain 2 x Chain Link Connector 1 x Storage Box