Features:* aluminum alloy material, high strength and durability.* A perfect replacement for your old or damaged air compressor check valve.* 3 male thread connectors are respectively for connecting pipes, air.* One thread connector is used to connect pipes, and the other thread connector is air pressure vessel and compressor piston pump.* Convenient to install with thread connecting ends. Specifications:* Material: Aluminum Alloy* Color: Silver* Male Thread Diameter: 20mm/16mm/10mm* Quantity: 1 PcPackage Contents:1 * Air Compressor Check ValveNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.