Uffy Industrial Style Ball Swivel 1/4" Connect NPT Male Quick Air Tool M Fitting Milton interchange, "M" style fitting, 1/4" Connector x 1/4" MPT threads Reduces leak points and creates a more lightweight tool-to-hose connection! 53 Conical swivel ability extends hose life and minimizes user fatigue Made of hardened brass Combines the best features of the ball swivel fittings and connectors, resulting in a secure and erg