Hudson Bak-Pak sprayer is the easier more efficient way to spray for bigger jobs, Hudson Suprema Bak-Pak model 63184 provides tough one-piece blow molded tank; large easy-fill opening with fine mesh screen, Powerful corrosion-resistant poly piston pump, Left or right-hand pumping and spraying, Non-absorbent padded quick-connect carrying system and waist strap, Kem Oil hose; nickel-plated brass spray wand , Adjustable cone nozzle; massive poly valve, Holds (4) gallons, SKU: HDH011