OSG Flat Bottom Carbide Drill - Solid 2xD - EGIAS Coated - 6.60mmThe OSG Flat Bottom Carbide Drill is a 6. 60 mm solid carbide tool engineered for precise flat bottom hole drilling. With an EGIAS coating and a 2xD length to diameter ratio, it delivers high speed performance and extended tool life across steels, alloys, and hardened materials. Diameter: 6. 60 mm Geometry: Flat bottom drill for true flat bottom holes Length to Diameter: 2xD solid carbide construction Material: Solid carbide for durability and