Troy-Bilt CSV70 159cc Self-Propelled 3-in-1 Chipper Shredder Vac Powered by a self-propelled 159cc OHV engine to help you clean your yard easily This 3-in-1 chipper shredder vacuum runs off of a powerful self-propelled 159cc OHV engine with 1.5-inch chipping capacity The use of the 7-foot on-board vacuum hose and 3-inch extensions makes it easy to clean even tight spots and under shrubs With the 8:1 reduction ratio capabilities, turn 8 bags of debris into one Large 2-Bushel felt lined collection bag for easy clean up