Attributes . Flexzilla Pro Mini Impact Wrench: Flexzilla Pro Air Hose with Reusable Fittings, 3/8" x 50 ft.: Flexzilla Pro High Flow Couplers and Plugs (1) 1/4" FNPT Coupler, (1) 1/4" MNPT Coupler, (2) 1/4" FNPT Plugs, (3) 1/4" MNPT Plugs, (1) 1/4" MNPT Ball Swivel Plug . Names