Feature: 1. [Dual Head Air Chuck] Easily inflate hard to arrive valves without twisting the chuck onto the stem, simply push or pull the chuck onto the valve for a secure seal. 2. [Metal Construction] The long metal body of the chuck is sturdy and non rusting, allowing to arrive inner wheels without dirtying your hands, supporting a maximum air pressure of 300 psi. 3. [Quick Connection] The tire chuck is designed with 1/4 inch FNPT thread for easy attachment to air hoses, compressors, or tire inflator pressure gauges, ensuring convenient tire inflation and pressure checks. 4. [With Quick Plug] The dual head air chuck comes with standard 1/4 inch male thread quick plug for quick connections to the female thread quick connector of the hose. 5. [Leakage Proof] Seal type air chuck allows the shut off valve to close off airflow when the valve stem is not open. Quickly and easily inflate tires without any leakage. Suitable for trucks, RVs, and buses. Specification: Item Type: Dual Head Air Chuck Material: Iron, Zinc Alloy Rear Thread Size: 1/4 Inch FNPT Package List: 10 x Dual Head Air Chuck 10 x Quick Plug 1 x Water Proof Tape