Annular Cutter Set, 6 pcs Weldon Shank Mag Drill Bits, 1" Cutting Depth, 1/2" to 1-1/16" Cutting Diameter, M2AL High-Speed Steel, with Pilot Pin and Portable Case, for Using with Magnetic DrillsProduct Features Premium M2AL High Speed Steel & High Compatibility With excellent wear resistance and high temperature resistance, this annular cutter set has a longer lifespan, enduring the test of time and providing lasting support for your work. Our accessories are compatible with almost all major brands of machinery. Innovative Geometric Blade Our mag drill bits feature unique pointed and flat blades to ensure each blade carries a moderate load,