21 inch. Front Tine Rototiller

Adjustable Tilling Width - Choose between 11, 16, or 21 inch tilling widths to prepare larger gardens or to cultivate between rows Powerful OHV Generac Engine - Easy-starting 98cc OHV Generac engine provides 3.33 ft/lbs of gross torque Easy Maneuverability - 8in never-flat wheels are lightweight and make transport hassleYou may also like Generac Power Systems DR Power Rear Tine Rototiller.