3M™ 051131-49488 6501QL Probed Reusable Half Facepiece Respirator With Cool Flow™ Exhalation Valve, S, 4-Point Quick Latch Suspension, Bayonet Connection, Resists: Gases and Vapors 3M™ 051131-49488 6501QL Probed Reusable Half Facepiece Respirator With Cool Flow™ Exhalation Valve, S, 4-Point Quick Latch Suspension, Bayonet Connection, Resists: Gases and Vapors