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.