PurposePrototype wrench used to install electrical connectorsWrench End TypeOpen Side TeethWrench Body TypeStraightWrench VariationStandardDrive TypeInternal SquareInner Tooth to Tooth Distance0.570Number of Contact Points3Spanner ShapeC-TypeHead Thickness0.19Inner Diameter0.63Used WithTorque wrenchDrive Size3/8Tooth Protrusion0.028Tooth Width0.095Center-to-Center Distance1.49Head Outer Diameter0.90