Master Mechanic, 15/64" x 3-7/8", High Speed Steel, Titanium Coated Drill Bit, 135 Split Point, Jobber Length, Straight Shank, 135 Split Point Design With 4 Cutting Edges Eliminates Walking & Permits Quick Accurate Starting, Added Lubricity Of Titanium-nitride Surface Finish Enhances Chip Flow, Drilling Efficiency & Increases Drill Life, Recommended For Heavy Duty Drilling In Wood, Plastic, Wallboard, Plywood & Soft Metals & For Moderate Use In Heat Treated Or Ferrous Metals, Carded.