Description: Thread Diameter: Approx 9mm Length: Approx 19mm Hole Diameter: Approx 1mm Fit for Universal Car. Package Includes: 1 Piece Air Conditioner Compressor Pressure Relief Valve Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you