Aluminum Alloy - Bicycle Guide Wheel Accessories set for single speed conversions and chain control. Aluminum alloy construction provides light weight and durability for regular riding. - Single Speed Converter: Ideal for bikes that are suitable for mountain terrain. Converts a multi-speed setup to a single speed to simplify operation. - Rear Derailleur: This chain adjuster can turn a multi-speed bike into a single speed bike, enabling straightforward drivetrain setup. - Single Speed Adjuster: Suitable for folding bikes with rear derailleur. A practical accessory for riders who use folding bikes and want easy single speed adjustment. - Folding Chain Tensioner: Designed to work with folding configurations, aiding chain management during changes in setup. - Bicycle Chain Stabilizer: Floating pulley and spring adjustment can achieve and maintain proper chain tension for compatible drivetrains. - Performance and compatibility: Aluminum alloy construction supports reliable, long-term use on bikes that may run in mountain terrain, folding bikes with rear derailleurs, or other configurations requiring single speed operation and adjustable chain tension. Use scenarios - Convert a multi-speed mountain bike to single speed for simplified maintenance or specific riding conditions. - Adapt a folding bike with a rear derailleur to single speed operation while preserving drivetrain compatibility. - Use the floating pulley and spring adjustment to achieve and maintain proper chain tension on compatible bicycles.