The foldable bike chain tensioner is an indispensable tool for any cyclist looking to maintain their bike performance. Made from sturdy aluminum alloy, this chain adjuster ensures your chain remains properly tensioned. Its easy-to-use design allows for quick adjustments, making it nice for both casual riders and cycling enthusiasts. Features -Color:Black -Material:Aluminum alloy -Size:5.00X2.00X1.50cm/1.97X0.79X0.59in -Optimal chain tension: easily achieve optimal chain tension with the aluminum alloy chain tensioner, ensuring a smooth and efficient ride -Enhanced durability: constructed from strong aluminum alloy, this chain tensioner is built to provide performance -Portable design: compact and lightweight design, chain tensioner is easy to carry and use for on the go chain adjustments -Noise reduction: single speed chain tensioner maintains even chain tension to reduce noise and resistance, improving your overall cycling experience -Wide range compatibility: suitable for various folding bike models, this chain tensioner offers versatile and convenient use Package list: 2 x Bicycle chain tensioners