PRO Chain Tool Description: The PRO Chain Tool is a chain breaker tool specifically designed to fit 9 to 12-speed chains. The home mechanic will appreciate the ergonomic and textured handle that ensures comfort and accuracy during routine maintenance. Drive chain pins with precision with the guide which braces the chain so everything is lined up correctly. Graphics indicate speed compatibility to eliminate damaging the chain or the tool. Features: Compatible with 9-12 speed chains Ergonomically shaped handle with textured grip Chain plate makes chain/pin alignment easy Includes extra pin stored in the handle