Effective in preparing almost any surface the Harley TM-8 has been designed specifically to be a precision grading tool. Whether using finesse to prepare your seed-bed perfectly or using brute strength to cut and level for finish grade make this a truly amazing rake. Precision grading from the seat of your tractor. Heavy duty frame – able to stand up to bigger loads. Roll-Back Barrier. Urethane barrier above the roller allows you to quickly react to soil moisture conditions. You can choose the size of material you want to leave in the seedbed. Raising the barrier promotes faster soil drying and opening up of muddy sites. Pure Carbide Teeth Design. Not just carbide tough for long life, but specially shaped to ensure the best possible seedbed sub-base fracture pattern and superior moisture retention and release.