Features: brand new and high quality Excellent replacement for the old or broken check valve of your air compressor. The three male thread connectors are respectively for tube connecting, air pressure tanks and compressor piston pump. High quality air compressorreplacement for old or damaged check valve. Convenient to install with the thread connecting ends. Compressive strength, corrosion-resistance, high-performance and high reliability. Specifications: Material:Zinc Alloy Interface Inner Diameter:Approx.10mm/0.39inches Interface Inner Diameter:Approx.19mm/0.75inches Interface Inner Diameter:Approx.20mm/0.79inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item Package includes: 1x Air Compressor Check Valve