The PRO-FLO™ 525 and PRO-FLO™ 900 tailgate spreaders feature a 2-stage, auger-fed delivery system and independent variable speed control for consistent and efficient flow of all types of de-icing materials, including rock salt and sand. Designed to attach to a wide variety of vehicles, these tailgate spreaders feature a corrosion-free poly hopper for long lasting performance, making it the spreader of choice for any job site or surface condition.