RacingDiffs Breakaway torque/preload measuring tool (Adapter) for BMW

This RacingDiffs tool provides possibility of easy measuring breakaway torque of your Limited Slip Differential (LSD) unit.
It is universal hence it can be mounted to any bolt-type output flange. It is made for 1/2" socket wrench/torque wrench. 

What is Breakaway torque?
Breakaway torque is the minimal force required to turn one output shaft while opposite is fixed. This is an important measure for adjusting the LSD unit, therefore, if you are a track-day addict, this tool is something you should have in your garage. Especially when building/rebuilding a BMW E46/E9X M3 differential. Along with E9X M3 opening tool, it is a necessary part for rebuild.