Engineered by Arnold, the Power Rake is a patented 6-in-1 mower blade that cuts, mulches, scalps, rakes, dethatches, and bags lawns. Using the Power Rake is simple — just attach the blade to a mower and adjust the height of the nylon lines to accomplish multiple chores. With the nylon lines brushing the top of the grass, the blade rakes up leaves, grass clippings and lawn debris. Set the nylon lines at 1/4-inch above the soil, and the blade dethatches. Keeping the nylon lines in constant contact with the soil, the blade scalps the lawn in preparation for reseeding. The Power Rake fits many 21- and 22-inch walk-behind mowers.