Features: • 5:1 - 120:1 ratios • Box sizes 37 - 147 • Horsepower range from 1/4 HP to 75 HP • Built to German Institute for Standardization (DIN) • For high efficiency, high strength and low noise • All cast iron housings for unquestioned strength and reliability • Gears are precision processed for better rotation and quieter operation • Gearbox flanges are designed to except NEMA C-face electric motors • No coupling necessary • Drop-in for most major European-produced inline reducer brands • 2 year warranty