This is a heavy-duty motorcycle chain breaker and riveting tool set, designed for splitting and repairing motorcycle drive chains. It is capable of breaking and riveting chains from 3mm to 5mm. The tool comes with a foam insert for safe and organized storage in a tool cabinet. It is suitable for breaking, splitting, and riveting motorcycle and bike chains. The extractor pin features a removable guide for extended life. The set includes a blow-molded case for convenient storage.