Milwaukee 48-20-7371 1/2" X 4" X 6" SDS Plus MX4 4 Cutter Carbide Bit

Features
4-Cutter Carbide Bit, Solid Carbide Tip for Up to 3X Life in Rebar
Drills More Accurate Holes for Anchoring Applications
Centering Tip for Accurate Hole Placement
Won't Lock Up in Rebar
1/2 Diameter x 4 Flute Length x 6 Overall Length MX4 Premium Tipped Carbide Drill Bits for SDS Plus+ Rotary Hammers.