IEY1644 Features: * Titanium coated for 6 times longer life than standard high speed steel drill bits * For repetitive drilling in steel, alloy steels, wood, and plastic * Ideal for contractors, serious Do-It-Yourselfers, machine shops, and mechanics * 135 split point starts fast and prevents drill walking * Carded Dimensions: * 21/64"" diameter, 3-5/16"" flute length, 4-5/8"" overall length