Ideal for steel, wood and plastic Precision crafted from premium high speed steel Hardened and tempered for long life and high performance. 118 degree point for general purpose drilling application. Specially designed to fit drills with chucks 3/8" and larger Drill Bit Stats: Fractional jobber length. Diameter: 7/16". Over all length: 5-1/2". Flute length: 4-1/16". 3/8" reduced shank