The Do it Best 5-Piece Titanium Drill Bit Set offers up to 3x longer life over black oxide with a titanium coating that reduces heat build-up and keeps the bits sharper. Designed with a 135-degree split point tip for a precision start with no walking and a stronger core to resist breaking, this set ensures fast, accurate drilling in a variety of materials including steel, wood, and PVC. This 5-Piece set includes (1) of each: 5/32", 3/16", 1/4", 5/16", and 3/8".