The STEELMAN 14F14T-IND 1/4-Inch Plated Steel Quick Disconnect Plug with 1/4-Inch Female NPT Threads is the answer for any home workshop or automotive garage looking to power just one more air tool. Each plug is constructed of solid steel which has a durable nickel plating that is rust and corrosion resistant so condensation in water lines won't cause premature failure of the tool adapter. The quick-disconnect end is sized to fit 1/4-inch couplers and fittings and the threaded 1/4-inch FPT end threads easily onto tools for fast and simple setup. To make connections easier the hex shaped body of the plugs can be easily tightened onto tools with any adjustable wrench or an appropriately sized combination or end wrench.