PurposeUSED TO REMOVE AND INSTALL THE MAIN LANDING GEAR WHEEL RETENTION NUT FOR 777, 767 & 787 AND NOSE LANDING GEAR & MAIN LANDING GEAR FOR 747Airplane747, 767, 777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777F, 787-10, 787-8, 787-9Usage CodeMAINTENANCEAlternate/Substitute Part NumberST2580-22B