Milwaukee® Thunderbolt® Titanium Coated Bits are designed for extreme durability and up to 3x longer life. The Thunderbolt web is thicker than a standard drill bit, providing ultimate strength and protecting against side-load breaks. A titanium coating reduces heat buildup and keeps the bit sharp for extended performance. A specially designed parabolic flute form clears chips and debris fast and keeps the bit cool. A 135° split point delivers a precise start and prevents walking for fast, accurate holes. Effective in drilling on curved surfaces, Milwaukee thunderbolt titanium coated bits require less effort to drill through wood, metal and PVC, and are highly recommended for use with portable drills. Includes two bits.