The bicycle chain adjuster tensioner is an essential tool for any cycling enthusiast. Whether you're at home or in a professional bicycle repair shop, this device ensures your bike chain remains tight and secure. Simply attach the chain tensioner to your bike's chain and adjust it to the desired tension. This tool is for maintaining optimal chain performance during long rides. Features -Color:Blue -Material:Metal -Size:4.00X2.00X1.10cm/1.57X0.79X0.43in -Lightweight and durable: made from metal using manufacturing, this chain adjuster is both lightweight and durable, ensuring performance -Bikes: specifically designed for folding bike chain adjusters, it allows for quick and easy chain length adjustments, enhancing your riding comfort -Easy to use: no need for professional tools; this chain adjuster can be operated with just a few simple steps, making it userfriendly for all cyclists -Compact design: its compact and portable design makes it easy to carry and store, ensuring your bike chain is always in optimal condition wherever you go -Reliable and : constructed with durable materials and fine craftsmanship, this chain adjuster reliability and a Package list: 1 x chain tensioner