Features1Stainless Steel and Aluminum Materials: Made of high strength stainless steel and aluminum alloy, the bike cassette is resistant to rust and built to last, ensuring its longevity and performance. 2Smooth Rotation: The flywheel's smooth rotation ensures a seamless cycling experience, without excessive noise or disruptions, allowing for a quiet and pleasant ride. 3Precise Thread: The bike cassette is equipped with precise thread that ensure a tight and secure connection with the bike hub, preventing any unwanted slippage during rides. 4Lightweight Design: The lightweight bike cassette flywheel effectively reduces weight while maintaining strength, ultimately lightening the burden during cycling. 5Easy Installation: The 5 speed bike flywheel sprocket parts are designed for easy installation and user friendly operation, making it an ideal choice for outdoor cycling enthusiasts and riders.SpecificationItem Type: Bike CassetteMaterial: Stainless Steel, Aluminum AlloyPackage List8 x Bike Cassette Parts