ALUMINUM ALLOY MATERIALTensioner is made of high quality aluminum alloy material, which is hard, stable, and can be used for a long time.FIT FOR MOST GEARSthis bike chain tensioner can fit various sizes of gear, and prevent chain from skidding out from the crank.Name:Bicycle Chain GuideMaterial: aluminum alloyGuide wheel teeth:10Weight:106gColor: black/red/gold/silverGood ServiceIf you have any problems with this product. you can contact us at any time. [DURABLE ALUMINUM ALLOY BODY] : Crafted from high-quality aluminum alloy, our chain tensioner boasts a lightweight yet robust design, providing stability and longevity for your mountain or folding bike. [SILENT AND SMOOTH OPERATION] : Experience noise-free and smooth rides, thanks to the chain guide that minimizes chain slaps and vibrations, ensuring a quiet and enjoyable biking experience. [FUNCTION] : bike chain tensioner can be applied in, road racing, fixie bikes, single speed bikes, ect. Titanium pivot screws 10 spring holes Change the mounting direction to adjust the elasticity. Full body skeletonized design Reduced weight and sewage. [PREVENT FALLING OFF] : Folding chain stabilizer can effectively prevent the chain from falling off due to instability during riding. [EASY TO INSTALL] : Exquisite workmanship, stylish and generous appearance, stable workmanship, easy to install and disassemble, simple . Department Unisex Adult Item Weight 7.1 ounces Manufacturer CZMYCBG Number of pieces 1 Assembly required No Item model number CZMYCBG Package Dimensions 1.18 x 0.79 x 0.39 inches