X tools pro crown race setting tool 15x tools offer a comprehesive range of bicycle tools with quality built in and at great value prices whatever job is looming be it maintenance or a rebuild x tools have the equipment you need includes setting tube with one 15 setting insert for installing the crown race used on 15 headsets use a hammer and tap the end cap on the tube to seat the race into its proper place buy x tools crown race setting tool from chain reaction cycles the worlds lar