The Phillips 3/8" Female Pipe Thread Shut-Off Gladhand is a great way to secure your air system. It features a built-in shut-off valve and a connection plate with color coding for quick identification. This gladhand is made of a bulk head fitting and meets the requirements of SAE J318. It is designed for use with double trailers and is a great way to ensure your air system is secure and reliable. FleetPride is your First Click in Heavy Duty®.