Campy square BB use a different taper on the spindle. The Campy cranks will botom out on a Shimnao spindle and the cranks may be damaged. There are two different tools for older Campy BB's. Veloce and Centaur use a ring with a bunch of wavy ridges arund the outside. PArk, Tacx and Campy make a tool for this. Chorus and up use the same tool that you use on the cassette ring. The tool may look similar to a Shimano BB tool but the splines are differente39540is said:Is the square taper for a Campi crank different then Shimano? If the bottom bracket itself is different will I need a different bottom bracket tool?