Aluminum Alloy Bicycles Chain Tensioner Bicycles Prevent Chain Falling Adjust Tool Bike Chain Adjuster Stabilizer

Features: Made with high strength aluminum alloy, this bicycles chain fastener ensures durability and corrosions resistance. Not easy to fade, more beautiful. Effectively prevent the chain from falling off the frame and damaging the surfaces of the frame. Specifically designed for folding bikes, this bike chain tensioner helps adjust the chain tightness to prevent derailment effectively. Exclusively designed for rear fork bicycles with a 10mm/0.39inch rear opening structure, ensuring a perfectly fit and maximums stability. Easy to install. It is a perfect replacement for your old or break.

Specifications: Component: Aluminum Alloy Color: Black/Red Size: As Shown in the Picture

Package Includes: 1pc Bicycles Chain Tensioner

note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.