OSG Flat Bottom Carbide Drill - Solid 2xD Long Length - EGIAS Coated - 5.10mmThe OSG Flat Bottom Carbide Drill is built for engineers and machinists who need deep, precise flat bottom holes with clean finishes. This solid carbide drill has a 5. 10 mm diameter, a 2xD long length for extended reach, and an EGIAS coating that boosts performance on tough materials. Brand: OSG Diameter: 5. 10 mm Length: 2xD long length (extended reach for deeper holes) Material: Solid carbide for rigidity and precision Coating: EGIAS coating for