Air compressor internal thread diameter: 1/4inch pressure reducer. 3-hole compressor pressure switch, and practical. Light weight, small size, easy to install and disassemble. The pressure can be read on the pressure gauge, maximum pressure: 175 PSI-180 PSI, 12 bar With the 240 V valve knob, the air pressure can be adjusted as required. Lower the pressure at of the tool. Colour: black + silver Material: metal Package Contents: 1 x Pressure Regulator Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.