Features: Made of high quality material, solid, durable, wear resistance and high precision, practice and serve you for a long time. Automatic trip, easily to control the air pressure. It can help to save electric energy of the air compressor. Easy to install and convenient to use. There is a red ON/OFF manual switch and Auto load/unload. 2 optional types can be selected. Great switch for miniative air compressor. Specification: Material: Plastic, Brass Dimensions: app.80 x 45 x 75mm/3.15 x 1.77 x 2.95in Optional Types: No.1: 1 Port; No.2: 4 Ports Color: Black Quantity: 1 Pc Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Air Compressor Shipping 1.If you need to buy in bulk, please contact, we will reply in 24 hours. 2.We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. 3.Usually product Reaches after about 12-45 business days depending on destination. If you have not received your shipment within 45 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Refund or resend product will be offered if item still not received. 4.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We ask you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them! THANK YOU :)