Carmex Carbide Tiny Tool is a compact solid carbide boring bar designed for precision work in tight spaces. With a 3.1 mm minimum diameter, 15 mm reach, and an R0.2 corner radius, it excels at small-diameter boring and lightweight turning on a variety of metals, including stainless steels. Although built primarily for boring, its solid carbide construction and precise geometry make it a versatile choice for general turning tasks as well.

The tool family provides two coating grades to match different materials and cutting speeds. BXC is a PVD TiN-coated grade optimized for low cutting speeds and broad stainless steel compatibility (ISO P30-P50 / K25-K40). BMK is a sub-micron grade with advanced PVD triple coating, delivering extremely high heat resistance for smoother cutting and reliable performance across materials.

• Compact, precise boring capability: 3.1 mm minimum diameter and 15 mm reach allow access to tight bores while maintaining stable geometry for consistent hole size and finish.
• Coating options for different materials: Choose BXC TiN-coated grade for stainless steels at lower speeds, or BMK with triple coating for high heat resistance and smooth cutting across a wide range of materials.
• K20-grade carbide core: Built from a high-quality carbide core designed to resist wear and sustain sharpness through demanding boring and turning tasks, enabling repeatable, reliable results.

Used correctly, this tiny boring bar helps you complete jobs faster with repeatable internal diameters and smoother finishes. The combination of compact geometry, material-specific coatings, and a durable carbide core supports steady performance across applications, reducing downtime and boosting productivity on every project.