Graco Monark 2:1 Pneumatic 2-Ball Piston Pump : Stubby Carbon Steel & UHMWPE w/ Leather SealsDesigned for high production applications, Monark pumps provides uniform and easily controlled delivery with its reliable Monark air motor. Handles a wide range of fluids including cleaning fluids, high solid coatings, acid catalyzed materials, resins, high solid plural component coatings, solventborne and waterborne fluids, stains, lacquers and varnishes. Drum and stubby length models available for mounting and application flexibility Positive