Rolair 1/4" Industrial Steel Swivel Plug with 1/4" Male NPT This 1/4" industrial swivel plug with 1/4" male NPT is made of solid, high-quality steel that resists crushing and marring when dropped. A plug with durable, resilient metal construction is important for extending the life of your couplers! Its swivel design allows the coupling and hose to rotate, which prevents twists, kinks, and bends in the hose and reduces maintenance costs. This plug is industrial style and is interchangeable with Milton M style, Amflo Type D, Camel Type D, and Truflate I/M style. Features 1/4" male NPT threads 1/4" industrial body Swivel design Durable, damage-resistant steel construction Interchangeable with Milton M style, Amflo Type D, Camel Type D, and Truflate I/M style