Features 1、[Recyclable] This bicycle chain link can be reused, and the disassembly and installation of the chain are very convenient. 2、[40MN Material] Bicycle chainrings are made of durable 40MN material with high hardenability, strength, hardness, toughness and durability. 3、[Extended Service Life] The chain master link roller prevents thermal cracking in cold weather due to intense heating and cooling during races. 4、[Main Usage] Chain master link rollers are suitable for Baja Doodle Bug Motovox Mini Bike Harbor Freight Predator 212cc Go Kart Cart. 5、[Sufficient Quantity] There are a total of 20PCS chains in the set, and each of them can be reused, this set will last you a long time. Specification Item Type: Chain Master Link Roller Material: 40MN Model: 35 1 cl Package List 20 x Chain Master Link Roller 1 x Storage Box