Features: 1.Chain Tensioner: Motorcycle chain tensioner aims to keep the chain tight and prevent the chain become too loosen cause the chain to fall off. 2.Wide Application: Chain guide tensioner for ATVs, Dirt Bikes, Motorcycles, can work with all chain sizes. 3.Durable Material: Heavy duty chain roller tensioner is made of high quality metal and plastic, durable and sturdy. 4.Wear Resistant: The chain roller with longer ride can reduce wear of the chain, 4mm thick metal bracket, stronger than other turnbuckles. 5.Stable Performance: Included improved spring with thicker wire, and comes with seamless steel bushing for smooth rotation. Specification: Item Type: Chain Roller Tensioner_x000D_ Material: Metal+plastic_x000D_ Color: Black_x000D_ Fitment: Suitable for most of dirt pit bikes, street bikes, motorcycles, ATV, off road vehicles, etc. PackageList: 1 x_x000D_ _x000D_ Chain Roller Tensioner 1 x Spring