2-1/2 National Standard Thread x 3 National Pipe Thread Swivel AdapterThe 2 1 2 National Standard Thread x 3 National Pipe Thread Swivel Adapter is a highly functional and versatile coupling solution designed to connect fire hoses with NPT pipe fittings while allowing swivel action to reduce stress and strain on the hose. This feature allows the adapter to rotate freely, preventing strain on the hose and allowing for easier alignment. Specification Details TYPE National Pipe Thread Swivel Adapter DESIGN Durable