Structure: Booster Pump Power: Pneumatic Pressure: High Pressure Usage: Air Pump Standard or Nonstandard: Standard Fuel: Oil-water separator : Grade 3 immoderate strain Application: Encourage colour:Gold Material:copper Package Contents: 1*piston head Only the above equipment content, other item should not included. Note: Light and varied displays could cause the colour of the thing within the photograph a bit diverse from the real thing. The measurement allowed error is +/- 1-3cm.