ITEM NAME:Bike Chain Tensioner Adjuster Aluminum Alloy Bicycle Fastener Bolt Single S Z1W1 Bike Chain Tensioner Adjuster Aluminum Alloy Bicycle Fastener Bolt Single S Z1W1 Model Number:Bicycle tensioner Single speed converter chain tensioner,great for mountain terrain bicycle. Floating pulley and spring adjust for perfect chain tension. Light weight and easy to install. Made of high grade aluminum alloy material,durable in use. Size:20*7mm Colour:Black Material:aluminum alloy Package Contents: 1* Bicycle tensioner
