The OTR Cast Iron Service 1/2" Glad Hand is a premium quality coupling device designed for heavy duty commercial vehicles such as trucks and trailers. Made from high-grade cast iron material, this product is built to withstand extreme weather conditions and frequent use, ensuring long-lasting durability and reliability. The Glad Hand features a 1/2" NPT thread and is compatible with most standard air hoses used in the transportation industry. Its rugged construction and secure sealing mechanism ensure a tight, leak-free connection between the air brake lines of the truck and trailer, ensuring safe and efficient operation of the vehicle. FleetPride is your First Click in Heavy Duty®.