Powermate Female Plug Set: * 2 female 1/4" NPT plugs * Quickly connects air tool to air hose when used with a quick coupler * For use with quick coupler * 1/4" x 1/4" NPT female threads * I/M industrial series * Typically attached to 1 end of a hose for connecting to a compressor * The other end would have a quick coupler for connecting to an air tool * Model# 038-0054pm