●Bearing is made by stainless steel, which are super fast, smooth and durable.
●Waterproof
●Dustproof
●Positive and negative tooth guide wheel can effectively inhibit the horizontal swing of the chain, so that the speed is more accurate.
●Material: AL7075-T6
●Teeth: 12T
●Size: 5 cm
●Bearing: Stainless steel
●Compatible system: Sram
●Weight: 14g
●Color Options:Black/Red/Blue/Green
●Package:1PC / Blister with PRG card