These three top-dressing units offer unmatched performance in distruibuting Har-Tru as well as sand, rubber, and other materials for synthetic grass, natural turf and running tracks. Tru-Flow spreaders handle the toughest of conditions. For top dressing to be effective, it needs to be applied as uniformly as possible. Just spreading material around no longer produces the desired result. Tru-Flow's unique, 8" dispersal drum, is encased in expanded metal, allowing the Har-Tru inside the spreader's hopper to be placed on the court. Conventional drop spreaders rely on gravity to help release the Har-Tru from its hopper, but the Tru-Flow, pulls the surface out of the hopper and on to the court with unmatched consistency. A 24" hand model will hold up to 4-80 lb bags of Har-Tru. A 36" tow-type top-dresser can handle 8 bags. A 54" tow-type top-dresser can handle over 15 bags.