Material and durability Made of aluminum alloy and stainless steel for wear resistance and rust resistance, built for longterm use in varying weather and road conditions. Package contents Gaskets, cassette cover, cassette, chain tensioner, wrench, and torque adjuster are included for complete installation and setup. Function and purpose Converts a multispeed bicycle into a singlespeed bike, simplifying the drivetrain and reducing maintenance needs. Design and performance Chain Tensioner with adaptor provides consistent chain tension, helping you pedal with less effort and supporting stable performance during long outdoor rides. Key benefits Durable construction and reliable tensioning for singlespeed setups. All components included in one kit, with tools to assist installation and adjustment. Adapter enhances compatibility for achieving proper chain tension on conversion. Compatibility and use Designed to convert multispeed bikes to singlespeed configurations; includes adaptor to facilitate tensioning. Use scenarios Urban commuting: convert a daily rider to a simpler singlespeed setup for lowmaintenance riding through city traffic and potholes. Fitness riding: on road or mixedterrain rides, a singlespeed configuration can provide a steady cadence and predictable gearing. Long outdoor touring: reliable chain tension and minimal drivetrain adjustments help during extended rides on uneven surfaces. Installation and tools Wrench and torque adjuster are included to assist proper installation and torque setting, supporting a secure and precise setup.