The DR Power PRO SP Walk-Behind Manual-Start Leaf and Lawn Vac is a step up from the entry level model with these updates: 1) Self-Propulsion (with 3 forward speeds and 1 reverse), 2) 33% more collection capacity (8 cu. ft.) and 3) an onboard chipper that lets you dispose of branches up to 2in. in diameter as you work your way around the yard. This model also includes bigger front tires (14in.) and a flexible skirt on the intake snout that will ride over roots, rocks and other irregularities on your yard without jolting the machine to a stop. You can keep the intake close to the ground (maximizing suction power) and work with fewer interruptions. The transmission uses our EZ-Turn™ steering technology, so you don’t ever have to wrestle with the machine. The PRO SP is powerful, easy to use, and has the highest collection capacity of any walk-behind vacuum available!