The Shimano TL-LR21 Lockring Tool is designed for accurate installation and removal of lockrings. It ensures correct engagement and torque when working on Shimano Centerlock systems. Ideal for both professional mechanics and home workshops. Centerlock Rotor Compatibility: This tool is specifically engineered for Shimano Centerlock disc brake rotor lockrings. The precision-machined interface guarantees a secure, slip-free fit during servicing. It helps protect both the lockring and rotor from damage. Durable Steel Construction: Made from hardened steel, the TL-LR21 delivers exceptional strength and longevity. It withstands repeated use without deforming or rounding. Built to handle demanding workshop conditions with confidence. Extended Drivetrain Use: Also compatible for mounting and dismounting 12-speed Micro Spline cassette lockrings. This versatility makes it a valuable addition to any Shimano-focused tool kit. One tool, multiple essential jobs. Its compact design allows for easy handling and controlled application of torque. The tool works seamlessly with standard wrenches. Storage and transport are simple, making it highly practical.