The Milton Industries Air Brake Service Kit, No. 2800MILKIT, is designed to allow a technician to safely perform maintenance to an air brake system. The kit is able to release frozen brakes and pre-treat trailers to reduce the risk of frozen air brake systems. The kit includes a 75 psi safety valve, replacement cap O-rings, 3' 1/2" ID whip hose assembly, 3/8" M-Style connectors, and four gladhand connectors. The kit is able to connect to most air systems. It features straight and 45-degree connectors, is portable, and comes in a durable blow molded case.