The Carmex Carbide Tiny Tool Boring Bar is a compact, solid carbide solution designed for precise boring and versatile turning. With a 5.1 mm minimum diameter, 30 mm reach, and a left-handed orientation with a 0.1 mm nose radius, it is built to reach tight pockets while maintaining tight tolerances. It’s an ideal choice for engineers, machinists, and hobbyists who need reliable hole quality across a range of materials.

• BXC Grade with TiN coating for low-speed, wear-resistant boring: TiN-coated BXC provides durable performance at lower cutting speeds and pairs well with stainless steels (ISO P30-P50 / K25-K40), helping extend tool life and maintain consistent hole size.
• BMK Sub-Micron Grade with triple PVD coating for high-heat performance: The BMK grade offers extreme heat resistance and smooth cutting across materials, delivering reliable results in demanding applications and helping you push tougher jobs without sacrificing finish.
• Compact geometry for tight bores and general turning: The 5.1 mm minimum diameter, 30 mm reach, and R0.1 nose radius on a left-hand tool provide rigidity and reach for precise holes in tight spaces, with excellent compatibility for a wide range of turning tasks.

This tiny carbide boring bar is built for real-world efficiency: it reduces tool changes, delivers predictable, consistent finishes, and maintains performance across multiple materials. By selecting the right grade for the job—BXC for stainless and low-speed cutting or BMK for high-heat, all-material tasks—you can streamline setups, shorten cycle times, and achieve reliable results from the first cut to the last.