Carmex Carbide Tiny Tool is a compact TNX-grade solid carbide boring bar designed for precise work in tight spaces. With a 4.1 mm minimum diameter, 22 mm reach, and a left-hand nose featuring an R0.2 radius, it excels at small-diameter bores while maintaining stable, smooth cutting. Although optimized for boring, it can also handle light turning tasks, making it a versatile addition to any shop.

This tool is offered in two advanced coating grades to match a range of materials and speeds. BXC is a PVD TiN-coated option designed for low cutting speeds and broad stainless steel compatibility (ISO P30-P50 / K25-K40). BMK is a sub-micron grade with an advanced PVD triple coating, delivering exceptionally high heat resistance and smooth cutting for demanding jobs and general-purpose use.

• Compact carbide design: rigidity and reach in a small-diameter tool enable accurate boring in tight holes with minimal deflection.
• Two advanced coating options: choose BXC TiN for steady performance at lower speeds on stainless steels, or BMK’s triple-coat, high-heat-resistant build for long tool life and smooth cuts across materials.
• Left-hand geometry with a precise R0.2 nose: optimized entry and finishing control for clean, consistent bore quality.

This combination of compact size, specialized coatings, and precise geometry helps you complete boring and turning tasks with fewer passes, less rework, and more predictable results—supporting faster workflows and longer tool life across a broad range of materials.