Craftsman A19711 Air Compressor Check Valve Check valve for an air compressor Fits many Devilbiss, Makita, Porter Cable, and Craftsman models 1-Inch long, 1-Inch wide, and 1-Inch high Package weight of this item is 1-Pound Check valve for an air compressor 1-Inch long, 1-Inch wide, and 1-Inch high Package weight of this item is 1-Pound