Topzone&reg; 8 Pieces 1/8" - 3/8" Brad Point Drill Bits Set for Wood Patented speed tip design penetrates surfaces quickly. Commonly used for drilling anchor holes when installing flag poles, mail boxes and running electrica Innovative flute design removes material faster for easier drilling. Size: 3mm-10mm (1/8", 5/32", 3/16", 1/4", 9/32", 5/16", 11/32", 3/8")