Milwaukee Thunderbolt 15-Piece Black Oxide Drill Bit Set, 1/16 In. thru 3/8 In. MR. HEATER tile underlayment board & masonry

tile underlayment board & masonry materials like brick

Up to 300 PSI

Speed square holder

carbide blade

Milwaukee Thunderbolt 15-Piece Black Oxide Drill Bit Set, 1/16 In. thru 3/8 In. MR. HEATER tile underlayment board & masonryThese jobber length drill bits are designed for extreme durability and long life. The Thunderbolt web features a thicker core than a standard drill bit, which provides ultimate strength and protects against side load breakage. A specially designed parabollic flute form clears chips and debris fast to keep the bit cool. A precision start, 135 split point tip starts on contact to keep the bit from walking for fast accurate holes. Excellent for drilling