the oil pump volume: 2L voltage: 220 V pressure: 1 when the lack of oil: oil pump give up working size:17*12*20cm Material:Aluminum alloy colour:Black + yellow Package Contents: 1 * oil pump with stress gauge Only the above kit content, assorted item aren't included. Note: Light and assorted exhibits can cause the colour of the thing within the photograph a bit of diverse from the real thing. The dimension allowed error is +/- 1-3cm.