Bike Chain Tensioner Aluminum Alloy Bicycle Fastener Bolt Red

2 pcs Bicycle tensioner:1 x red Bicycle tensioner &1 x black Bicycle tensioner 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:20x7mm Colour:Black + Red Material:Aluminum alloy Package Contents: 2 x Bicycle tensioner Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

What's in the box
2 x Bicycle Tensioner