PurposeTo remove and install the MLG wheel retention nut for 777, 767, and 787 and NLG and MLG for 747Used WithTorque WrenchWhere UsedMain landing gear on 777, 767, 747, and 787Wrench Size5-1/2Opening Shape6Wrench End TypeSocketWrench Body TypeStraightWrench VariationStandardDrive TypeInternal SquareDrive Size3/4Head Outer Diameter6.70