Introducing Tectran's Cast Iron Gladhands -Built to Last: These gladhands are the epitome of durability, designed to withstand the toughest conditions on the road -Seamless Construction: Crafted from one-piece casting, these gladhands eliminate issues related to clamp separation for a trouble-free experience -Perfect Connection: A \"positive-stop\" post ensures a flawless connection every time, promoting safety and reliability -Enhanced Sealing: Featuring polyurethane seals that resist oils and chemicals, these gladhands not only seal better but also offer an extended service life -Stainless Steel Filters: Where indicated, stainless steel filters provide additional durability and protection Upgrade your air connections with Tectran's Cast Iron Gladhands, the ultimate choice for durability and reliability on the road.