compressor internal thread diameter: 1/4inch pressure reducer.3-hole compressor pressure switch, durable 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 barWith the 240 V valve knob, the pressure can be adjusted as required. Lower the pressure at of the .Colour: black + silverMaterial: metalPackage Contents:1 x Pressure RegulatorOnly 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. If you have any questions, concerns, or need further information, please feel free to contact us anytime. Our team is dedicated to providing you with support and answering any inquiries you may have. Your satisfaction is our ultimate goal. We look forward to offering you top-quality products and service! Thank you for your support.