Features: Precise Tension Adjustment: Our bike chain tensioner allows for fine-grained adjustments to your chain tension ensuring a smooth and efficient ride every time. Quality Materials: Made from durable aluminum alloy and featuring CNC machining our chain adjuster is built to last and withstand the rigors of regular use. Easy to Install: With its folding design and fasteners our chain tightener can be quickly and easily installed on your bike allowing you to adjust your chain tension on the go. Universal Compatibility: Our bike chain tensioner is designed to work with a variety of bikes including road bikes folding bikes and mtbs making it a versatile addition to your cycling toolkit. Customer Service: If you confront any problems about our products please feel free to contact us we are ready to help. We will solve your problems as soon as possible. Specification: Material: Aluminum alloy Product Size: 23.8*20*18*12mm Net Weight: 10.3g Color: Black red gold silver Notes: 1. Due to the different monitor and light effect the actual color maybe a slight different from the picture color. 2. Please allow 1-3cm differs due to manual measurement. includes: 1 Bike Chain Tensioner (with screws) "