Feature: 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 Material: Metal+plastic Color: Black Fitment: Suitable for most of dirt pit bikes, street bikes, motorcycles, ATV, off road vehicles, etc. . Package List: 1 x Chain Roller Tensioner1 x SpringChain Tensioner: Motorcycle chain tensioner aims to keep the chain tight and prevent the chain become too loosen cause the chain to fall off. Wide Application: Chain guide tensioner for ATVs, Dirt Bikes, Motorcycles, can work with all chain sizes. Durable Material: Heavy duty chain roller tensioner is made of high quality metal and plastic, durable and sturdy. Wear Resistant: The chain roller with longer ride can reduce wear of the chain, 4mm thick metal bracket, stronger than other turnbuckles. Stable Performance: Included improved spring with thicker wire, and comes with seamless steel bushing for smooth rotation.