Compatible with Porter Cable FC350A1, FC350A 2, FM350A 1, FR350A 1,FR350A overhaul kit. part number 910450FR350A FC350A rebuild kitIncludes: A03849 piston stop X 1, 910767 collar X 1, A08368 Trigger Valve X 1, O Ring Kit X 1, 910765 GASKET, 897337 bumper X 1Genuine, OEM FR350A FC350A Replacement Parts