Rotary cutters have thick blades, a hitch, varying horsepower, and adjustable cutting heights. They also have heavy chains or rubber flaps on the edges to prevent cut debris from flying out from under the cutter.
How cutter implements work
Unlike a lawn mower, which has sharp blades, the blades on a rotary cutter are thicker and duller. They use centrifugal force and high torque to rip through thicker brush and bounce of hidden stumps and obstacles. Sharp blades would get caught in the tougher brush. The rotary cutter is attached to the rear of a tractor and pulled over the terrain to be cleared.
About cutter implements
Cutter implements are attached to the rear of a tractor and used to cut grass and brush. They can cut through thicker material than a traditional mower and come in a wide variety of sizes. Cutter implements are also known as rotary cutters, rotary mowers, or brush hogs.