Silver & Deming High Speed Steel Fractional 1/2" Reduced Shank Drill Bit 1" Size. 3" Twist Length. 6" Overall Length. Tubed.. Bit is constructed of M-7 high speed steel for high resistance to abrasion during tough drilling applications Three-flatted shank design provides better chuck grip and reduces slippage. Ideal for use in keyless chucks All Silver & Deming bits are 6" long and feature a 1/2" reduced shank that fits all 1/2" drills Standard 118 degree point for use in wood, metal, and plastic