X tools performance 7 11 speed chain whipthe x tools performance chain whip is compatible with 7 speed cassettes right up to 11 speed ones making it ideal for the home mechanic that is regularly working on different bikes it will efficiently hold the cassette in place so you can undo the lockring and features a tough heat treated construction and a corrosion resistant finish this design ensures that it not only performs well but that it can also stand up to repeated use features heat trea