PurposeUSED TO CLEAR BLOCKAGES IN THE 2 INCH DIAMETER PLUMBING OF THE VACUUM LAVATORY SYSTEM. NOT FOR USE ON THE TOILETS OR THE 4 INCH DIAMETER LAVATORY SERVICE PLUMBINGAirplane737, 747, 757, 767, 777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777F, 787-10, 787-8, 787-9Usage CodeMAINTENANCE 