1、Size Specifications: Extended straight foot double head air chuck features a 14 inch length and standard 1/4 inch FNPT female thread, ensuring stable and reliable air tube connections. 2、Metal Structure: The pneumatic chuck adopts industrial zinc alloy head and core, alloy steel rod, ensuring high hardness, wear resistance, no deformation, and has a long service life. 3、Dual Head Inflation: The tire inflation chuck is designed with a dual head design, allowing you to inflate from both sides and easily access the tire valve stem, improving inflation efficiency. 4、Convenient Use: When the valve is facing inward, the air chuck can easily approach the inner double head, making it easy to inflate the truck or measure the pressure of the internal tires. 5、Applicable Vehicles: This 1/4 inch FNPT air chuck is suitable for various vehicle types, including off road vehicles, commercial vehicles, cars, trucks, motorcycles, bikes, etc., with wide compatibility.