Features: * brand new and excessive quality*Made of high quality material, and reasonable to use*Excellent alternative for the outdated or broken verify valve of your air compressor.*Fast and easy to install. Convenient to install with the thread connecting ends.*Compressive strength, corrosion resistance, high performance and excessive reliability.*It suits for a Central Pneumatic Air Compressor.Specifications: *Material:Zinc Alloy *Color:As Pictures Show*Dimensions: 4.5x3.1x3.3cm/1.77x1.22x1.3inch*Thread diameter: 20mm, 16mm, 10mmPackage Contents:1* Air Compressor Check ValveNote:1. The real shade of the thing may be slightly different from the images shown on web page attributable to many points such as brightness of your display screen and light brightness.2. Please allow slight handbook dimension deviation for the data.