OSG Flat Bottom Carbide Drill - Solid 2xD - EGIAS Coated - 4.70mmThe OSG Flat Bottom Carbide Drill is a high precision tool designed to produce true flat bottom holes with reliability. With a 4. 70 mm diameter, a 2xD solid carbide body, and an EGIAS coating, it delivers excellent wear resistance and high speed performance across steels, alloys, and hardened materials. Coating: EGIAS coating for superior wear resistance and extended tool life at high speeds. Construction: Solid carbide with a 2xD length to diameter