The TWB-36 is a crowfoot style wrench that can be used with any 3/8" drive torque wrench and operates tools with 36 millimeter wrench flats such as the Park Tool LRT-2, LRT-3, LRT-4 and BBT-18 to verify that components are torqued to correct specifications. Constructed of heat treated and plated 4130 laser cut steel for long life.