RSM - RSM/HP models are designed to crush slabs of rock and stones up to 20 inches in diameter and 16 in deep. They work with 200-360 hp tractors and have a working width of 80-90 in. FAE’s RSM line is made for difficult farmland clearing work in places where large rocks and stones need to be cleared to prepare the field for agricultural use. Its wide opening guides large material towards the rotor and helps maintain consistently high performance when working the soil. An adjustable counterblade makes it possible to crush material to the desired fineness.