Adjustable, M-Style, Pocket Blow Gun, Offers Easy Grip, 2 Finger Control To Adjust From Full Volume Air Flow To Complete Shut Off, Knurled Grip For Secure Handling Even With Oily Or Greasy Fingers, Fits M Style Couplers, Or Any 1/4" Industrial Style Couplers, Maximum Pressure Of 150 PSI Or 15.9 SCFM At 100 PSI, Blows Chips & Debris.