Sod Cutter 7 in. Blacks Heavy Duty Steel Outdoor Watering Irrigation Tools New 7 in. Donut Sod Cutter Trim around sprinkler guards or donuts with this Orbit 7 in. Donut Sod Cutter. It helps protect spray nozzles from overgrown grass and keeps a neat, clean appearance. The heavy-duty steel construction makes for a durable sod cutter.For .