Knowles Harrows is a North American manufacturer of agricultural harrows, best known for its spring-tooth and wheel-mounted harrow designs used in seedbed preparation and soil conditioning. Their equipment is built with heavy-duty frames and heat-treated spring teeth, designed for durability, ease of transport, and effective field leveling in farming and land prep applications. Cummings and Bricker distributes Knowles products in Connecticut, Delaware, Indiana, Kentucky, Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, and West Virginia.