Billy Goat KV600SP Lawn and Litter Vacuum, 190 cc Briggs Engine, Mesh Bag with Dust Skirt, Self Propelled Large 5-blade impeller with serrated edges to maximize suction and debris reduction Variable height adjustment for hard surface or turf work Breathable hard bottom mesh turf bag with an integral dust cover loads from the bottom Bag zippers have been eliminated in favor of simple to use marine style clasps that open and close easily when dumping debris Self propelled