From Lee Valley web page. The 20" mower has the widest cutting path of all our reel mowers. Two quick-release levers easily set the cutting height from 1-7/8" to 3", allowing a higher cut for better soil moisture retention, more effective weed control, and a lusher-looking lawn. The four-wheel design adds stability, with 10" front wheels and 6" rear wheels. This 30 lb, five-blade mower cuts virtually any type of grass.