Super accurate and workshop quality tool for aligning all types of rear derailleur hangers. A really overlooked tool for the home mechanic and pro - small bumps and knocks can set your derailleur tip out of alignment. Ever tried setting your rear derailleur up and could not get that silky smooth shifting like before? The derailleur material is usually quite soft and can easily be bumped out from transporting, crashing and even on brand new are delivered out of alignment.
The box section is stiff and allows good feedback for straightening out bent tips. Simple to use and you get that silky smooth shifting action back