8 ROLLER HYPRO SILVERCAST SPRAY PUMP Brand new HYPRO Silvercast Roller Pump. Special Silvercast body is highly resistant to wear and corrosion even with Roundup. High volume and pressure. For livestock spraying, fertilizer application, weed and pest control. Spray wettable powders and chemicals. CCW (reverse by disassembling and reversing rotor in housing). SILVERCAST is Roundup ready!!!