The JET MG90HD is a heavy-duty 90° air-powered die grinder with a ¼″ collet and 0.6 hp motor delivering up to 14,500 RPM. Rear exhaust and a compact 7.5″ housing ease work in tight spaces. Features durable cast-aluminum end plates, ball-bearing motor shaft, lever throttle, and air-inlet screen for extended life. Requires ≈ 5 CFM @ 90 psi air supply — ideal for industrial-grade grinding, deburring, and metal shaping.