Widely compatible with 12-speed direct-mount chains, this tool offers seamless compatibility and user-friendly handling across a range of applications. It is designed to efficiently tackle installation and removal tasks on diverse setups. Durable and reliable construction, built with high-quality materials, ensures smooth and efficient operation over time. The tool is designed to withstand regular use without compromising performance. Protects your crank from damage and maintains a stable fit. The double rubber-ring design provides a secure, wobble-free grip that guards against scratches and keeps the crank protected during use. Precise and efficient performance. The tool is engineered for a precise fit, enabling smooth installation and removal without interference and with minimal effort. Use scenarios - Replacing or installing a 12-speed direct-mount chain on road, gravel, or mountain bikes to upgrade or service drivetrains. - Routine maintenance or professional service in a bike shop or home workshop, ensuring accurate fits and clean operation. - On-site field maintenance or on-ride adjustments where a reliable, non-damaging tool is needed to protect crank components and ensure smooth chain work.