The Carmex Carbide Tiny Tool - Boring Bar is a compact, rigid cutting tool designed for tight-bore work and precision turning. Built as part of Carmex’s solid carbide bar lineup, it delivers dependable performance in small-diameter bores thanks to its 8.1 mm minimum diameter, 22 mm reach, and a 0.2 mm nose radius. Whether you’re a professional shop, a job shop, or a dedicated hobbyist, this tiny tool helps you achieve clean holes and smooth finishes with consistent results.

Designed for boring applications but also suitable for general turning, the tool is offered in coating grades that optimize performance across a range of materials. BXC TiN-coated grade provides reliable wear resistance at low cutting speeds and works well with a wide range of stainless steels (ISO P30-P50 / K25-K40). BMK is a sub-micron grade with an advanced PVD triple coating, delivering extremely high heat resistance for maximum performance and smooth cutting across materials (ISO K10-K20).

• PVD TiN coating for longevity at low speeds: The BXC-grade coating reduces wear during boring and turning on stainless steels, extending tool life and maintaining consistent hole dimensions at lower cutting speeds.
• BMK grade with triple PVD coating for heat resistance: The sub-micron BMK coating delivers exceptional heat resistance and a smooth cutting action, ensuring reliable performance across a broad range of materials.
• Compact geometry: 8.1 mm Ø, 22 mm reach, R0.2 nose: Small-diameter design enables access to tight bores and pockets, improving hole quality and reducing the need for multiple tools.

With this tool in your toolkit, you can tackle tight bores and challenging parts with confidence. The robust carbide core and modern coatings help maintain consistent cutting action, so you get clean holes and smooth surfaces even when working with stainless steels and other materials. The compact geometry reduces overhang and tool deflection, speeding setup and boosting productivity, while long wear life means fewer tool changes and less downtime across jobs.