DEWALT Concrete Drill Bit, Carbide Core Bit Body, 2-1/2-Inch X 4-Inch 14 In. | 66T | Heavy | Gauge | Ferrous | Metal | Cutting | 1 In. | Arbor | DWA7747 | DEWALT They are very fuel efficient

They are very fuel efficient

Self feed spur for fast material penetration

these bits are GUARANTEED TOUGH

Grade: Coarse

DEWALT Concrete Drill Bit, Carbide Core Bit Body, 2-1/2-Inch X 4-Inch 14 In. | 66T | Heavy | Gauge | Ferrous | Metal | Cutting | 1 In. | Arbor | DWA7747 | DEWALT They are very fuel efficientThese 2 Piece Core Bits are carbide tipped to provide maximum durability when drilling into tough materials. The center bit is replaceable for maximizing the life of the tool, and there are a variety of lengths and diameters available in both SDS Max and Spline. Includes (1) 2 Piece Core Bit Features Carbide tipped, 2 piece design for easy diameter changes Replaceable center bit for maximum tool life Specifications Bit Type: Masonry Height: 2. 800 in