Carmex Carbide Tiny Tool - Boring Bar is a compact solid carbide bar designed for precise internal boring and light turning in tight spaces. With a 6.1 mm minimum diameter, a 30 mm reach, and a tip radius of R0.2, it delivers accurate hole sizes and smooth finishes in confined bores.

This tool line is offered in two high-performance coating grades to match your material and speed needs. BXC features a PVD TiN coating for reliable wear resistance at lower cutting speeds and works well with a wide range of stainless steels (ISO P30-P50 / K25-K40). BMK uses a sub-micron grade with an advanced PVD triple coating (ISO K10-K20) for exceptional heat resistance and a consistently smooth cutting operation across materials.

• Compact, long-reach boring capability: Enables precise internal boring in tight pockets thanks to a 6.1 mm minimum diameter, 30 mm reach, and a R0.2 nose radius for smooth, controlled cutting.
• Dual-grade PVD coatings for versatility: Choose BXC for stainless steels at lower speeds or BMK for high-heat, general-purpose performance across a wide material range, extending tool life and consistent results.
• Durable carbide construction for reliability: Solid carbide provides rigidity and wear resistance, delivering stable cuts and predictable finishes even in demanding materials.

This tiny boring bar helps you complete tight-diameter boring and small-diameter turning with confidence. The compact geometry minimizes tool overhang and deflection, while the coating choices maximize wear resistance and heat tolerance for longer tool life. With reliable performance across stainless steels and other materials, it reduces downtime, speeds up setups, and supports consistent, high-quality results from prototype work through production runs.