Ratchet 3/8" Standard Handle 90 Tooth Greatest power and comfort- ergonomic handle design delivers maximum power while providing comfortable grip by disipating force over maximum area.. Unique handle shape reduces hand stress by optimizing balance and weight for extended daily use. . The world's highest class 90 tooth gears are used to achieve unprecedented smooth movement and exceptional strength.. Exceptional surface finish- Proprietary hard chrome plating for anti-wear, anti-corrosion, and superior appearance.. Designed for maximum strength with minimal wall thickness made possible by tough materials, advanced processing technology, and optimal heat treatement. NBR390A