- The C20-F1-18 boring head set includes a metric F1-18 head, a C20 shank, and 12 cutters (18 mm width). It is designed for precise internal diameter adjustments on horizontal boring machines and CNC milling setups. - Material and durability: made from 40Cr alloy steel, this boring tool set provides reliable performance under light to medium cutting loads. Suitable for metal fabrication, repair shops, and machining operations. - Precision and control: features a fine adjustment scale with 0.01" increments, enabling accurate bore sizing and tight tolerance control for coordinate and CNC milling applications. - Convenience and setup: complete set comes with three wrenches for cutter replacement and tool setup, streamlining changeovers during production or maintenance tasks on milling and boring equipment. - Use scenarios: - Refitting internal diameters during sleeve installation on a horizontal boring machine. - Finishing precise internal diameters in CNC milling to meet tight tolerances. - Quick bore size adjustments and tool changes during routine maintenance on milling or boring equipment in manufacturing or repair environments.