The Carmex Carbide Tiny Tool - Boring Bar (MTL - K20 Grade) is a compact, solid carbide bar engineered for precision boring and turning on small to mid‑size parts. With a 6.1 mm minimum diameter, 22 mm reach, and a left‑hand orientation featuring an R0.05 nose radius, it delivers reliable performance in tight bores and close‑tolerance finishes. This tool is part of Carmex’s line of solid carbide bars and is designed to handle demanding applications with consistency.

Choose between two coating options to match material and speed needs: BXC TiN coated grade for low cutting speeds and broad stainless steel compatibility (ISO P30–P50 / K25–K40), and BMK a sub‑micron grade with advanced PVD triple coating (ISO K10–K20) for extremely high heat resistance and smooth cutting. The K20 BMK variant provides maximum performance for challenging jobs, while the BXC option offers dependable wear resistance at lower speeds.

• Solid carbide construction for rigidity and long life: Delivers consistent boring and turning performance with high wear resistance, reducing tool changes and delivering repeatable finishes.
• Coating options optimized for material and speed: BMK triple coating offers top‑tier heat resistance and smooth cuts across materials; BXC TiN coating supports stainless steels at lower speeds for predictable results.
• Compact left‑hand geometry with precise reach: 6.1 mm minimum diameter, 22 mm reach, and an R0.05 nose radius enable accurate bore entry and reliable performance in tight spaces.

This tiny tool streamlines workflows by combining rigidity, tailored coatings, and compact geometry in a single, reliable solution. It helps you achieve cleaner finishes, maintain consistent tolerances, and reduce downtime on projects that require precise boring and general turning on a variety of materials, including stainless steels.