Simpson SDS Plus Drill Bit 3 4 in. x 24 in. 2 Cutter Carbide Tipped MDPL07524 2 Cutter The Xtreme Series spiral technology The Xtreme Series spiral technology is purpose built for woodworkers and cabinet shops that need both a flawless surface finish and a bit that holds its edge through long production runs addressing the common tradeoff between cut quality and tool longevity Negatively ground spurs and a carbide cutting head work together to produce clean bores in demanding materials such as laminates allowing contractors to source compatible tooling for a wide range of drilling and demolition needs under a single trusted brand uniformly brazed carbide inserts