IRC061251 Coupler 1/4 ” male NPT M-STYLE 1/4 body size with 1/4” male NPT threads • For use at the air tool • Lightweight, easy to connect, and impact resistant, QTY of 5 with Matching Air Plugs. IRC061251 Coupler 1/4 ” male NPT M-STYLE 1/4 body size with 1/4” male NPT threads • For use at the air tool • Lightweight, easy to connect, and impact resistant.