533506 QRS breathing hose adapter for 3M 9000 series visors

Breathing hose adapter, with quick-release swivel connector (QRS), designed for 9000 welding visors. 3M 533506 QRS Breathing Hose Adapter. Respirator hose adapter, with quick-release swivel (QRS) connector, designed for 3M Speedglas 9000 welding visors. 3M's new Speedglas welding visors and Versaflo headsets feature a QRS breathing hose adapter that allows one-handed hose connection and disconnection. This connector is designed for other QRS breathing hoses (834016, 834017), used in conjunction with the 9000 Series welding visors and 3M visors.