Simpson 60688 4200 PSI 4 GPM Gas Powered Cold Water Pressure by | Jul 22, 2026Flow Rate: 4 GPM. Ergonomic Spray Gun w/ 31″ Pro-Style Wand Lance. Includes siphon tube for a wide variety of pressure washer-safe cleaners. Water Temperature: Cold. Monster 3/8″ x 50′ High-Pressure Steel-Braided Hose.
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