PurposeTo duplicate 65B83884 in order to manually activate the trailing flap mechanismOverall Length2.00Wrench End TypeExternal Involute SplineWrench Body TypeStraightWrench VariationStandardDrive TypeInternal SquareDrive Size1/2Head Thickness0.40Used WithTorque WrenchWhere UsedTrailing FlapNumber of Teeth27Spline Pitch16/32Pressure Angle30