Constructed from one solid piece of heavy-duty metal, DEWALT Impact Ready titanium drill bits are up to 5 times more durable than 2-piece conventional bits. A patented web taper helps to increase bit strength, and a patented pilot point tip delivers speed and clear, burr-free holes with helps to reduced bit walking. Ideal for metal, wood, and plastic. DeWALT® Impact Ready® Hex Shank Drill, Heavy Duty, Drill Size - Fraction: 5/16 in, Drill Size - Decimal Inch: 0.3125 in, 4 in Overall Length, 2 in Cutting Depth, Spiral Flute, 2 in Flute Length, 1/4 in Shank, 135 deg Point, Pilot Point® Point, Right Hand Cutting, HSS Cutting Edge, HSS, Titanium Coated, Applicable Materials: Fiberglass, Metal, PVC and Wood