Reviews over the

Bontrager BITS Tool

I haven't used the tool yet but the system is very well thought out (chain holder, chain remover in addition to the usual tools), complete and easy to remove. It takes a long time to install because you have to remove the armature spacers to fit it perfectly and the low safety circlip is difficult to fit (fortunately I have a circlip pliers otherwise it's almost impossible to fit it).