Carbon steel gear component — heat treated and hardened for long-lasting performance. Super hard construction resists wear and maintains reliable engagement across multiple gear systems. Key benefits Durable material: Made from carbon steel with heat treatment and hardening to withstand repeated use and high load. Wear resistance: Super hard surface reduces tooth wear and deformation, extending service life. Reliable function: Maintains precise gear engagement to help reduce skipping and improve shifting consistency. Wide compatibility: Suitable for 6-7-8-9-10-11 gears, covering a broad range of gear setups for repairs and replacements. What this solves Replaces worn or damaged gear parts to restore smooth shifting and drivetrain performance. Prevents frequent replacements by offering a harder, longer-lasting option than untreated components. Helps maintain proper chain tracking and engagement, lowering the risk of mis-shifts and drivetrain noise. Key attributes Material: Carbon steel Treatment: Heat treated and hardened Hardness: Super hard surface for extended durability Compatibility: Suitable for 6-7-8-9-10-11 gears Practical applications Commuter bike repair: Replace a worn sprocket or gear component on a commuter bike to restore smooth, reliable shifting for daily use. Vintage or mixed-gear systems: Ideal when servicing bicycles with 6- to 11-gear setups where compatible, hardened components are needed to match older or mixed drivetrains. Workshop stock: A reliable replacement part for bike shops and service centers handling a variety of gear counts. Why choose this part Straightforward compatibility across multiple gear counts reduces the need to match many different parts. Heat-treated carbon steel construction provides a balance of toughness and durability for everyday riding and maintenance. Installation and care tips Inspect mating components (chain, cassette/freewheel, derailleur) for wear before installation to ensure optimal performance. Follow standard torque and alignment procedures for your drivetrain when fitting the part. Regular cleaning and lubrication of the chain and sprockets will extend the life of this hardened component.