Whole Machine hydraulic cylinder seal kit for John Deere 120 Excavator (not 120C, 120D) for all 4 standard equipment cylinders, 2 Boom, 1 Arm & 1 Bucket. Includes rod bushing & piston wear bands. We are Fox Machine, Inc. Of Norway ME USA, If you have any questions please contact Dean at FoxKits seal kit store. Never attempt to service a pressurized cylinder, or a cylinder connected to a load, never use air or hydraulic pressure to disassemble a cylinder.