PRO Team Chainwhip Tool Description: The PRO Team Chainwhip is designed to be paired with a lockring tool for the installation and removal of 12-speed cassettes. Integrated Hollowtech II bottom bracket tool engineered into the end of the tool. Features: Constructed from extra durable heat-treated steel with an alloy sleeve for increased stiffness Ergonimic dual compound grip Longer design for increased leverage Integrated Hollowtech II bottom bracket tool PRO Team tools are 12-speed compatible