Carmex Carbide Tiny Tool - Drill, Boring, Chamfer, Turning & Facing Tool (CML) - Grade BMK - 6mm Drill Diameter x Reach 18mm (Left Hand)A line of innovative, multi task Tiny tools; A single bar can handle chamfering, boring, and facing as well as general turning applications. This allows for a reduction in a number of tools required, which in turn shortens the machining cycle times. Sub micron grade with advanced PVD triple coating (ISO K10 K20). Extremely high heat resistance for maximum performance; Smooth cutting operation. General purpose for all materials.