plastic air duster guns Model 989 Product features 1,User-friendly design, energy saving, beautiful, easy to carry; 2,Trigger and grip force one, to make things more convenient in use when blowing dust gun; 3,Used in some of the reach of one hand this is rather narrow, high and endotracheal clean working. New And Improved Internals Valve Design Makes This Blow Gun More Convenient, Faster, And Easier To Use For All Applications Comfortable Lever Control And Insulated Handle High Impact Plastic Body With Built-In Hanger Slot, Inlet Threads Are Female ¼" Npt For Accepting All Types Of Air Fittings