This motorcycle chain guide is made of carefully selected alloy and rubber materials, with long-term durability and excellent functionality, and can serve you well. It can be used to replace old or broken motorcycle chain guide sprocket. Features -Color: Black. -Material: Alloy, rubber. -Size: About 3.50X3.50X2.50cm/1.38X1.38X0.98in. -Inner diameter: 8 mm. - Made of alloy and rubber which is resistant to corrosion and not easy to oxidize and has long serving life. - It has simple structure design, simple operation method, and time-saving and labor-saving. - Although the body is small, it has strong compatibility and high practicability. - The chain roller guide makes the chain runs over the chain roller to keep it aligned. - Standard 8mm inner diameter, it can perfectly fit for your motorcycle wheel. - The chain roller guide is fit for most street bikes, motorcycles, off-road vehicles, ATVs, etc. Package list: 2 x Chain Rollers