Carmex Carbide Tiny Tool is a compact, solid carbide boring bar designed for tight-diameter work and precise turning. This left-handed tool features a 5.1 mm minimum diameter, a 22 mm reach, and a nose radius of R0.1, making it ideal for accurate bore entry and clean finishes in small habitats where space is at a premium.

Built for versatility, the tool is offered in two coated carbide grades. The BXC grade uses a PVD TiN coating optimized for low cutting speeds and works well with a wide range of stainless steels (ISO P30-P50 / K25-K40). The BMK grade is a sub-micron formulation with an advanced PVD triple coating (ISO K10-K20), delivering exceptional heat resistance and a smooth cutting action for demanding materials. Both grades provide reliable performance beyond boring, suitable for general turning jobs as needed.

• Two optimized grades for broad material coverage: Choose BXC TiN for stainless steels at low speeds or BMK’s sub-micron, triple-coated construction for high heat resistance and consistently smooth cuts across a variety of materials.
• Small-diameter, long-reach geometry: 5.1 mm minimum diameter with a 22 mm reach and R0.1 nose radius enables precise, controlled cutting in tight bores and close-tolerance applications.
• Left-hand configuration for reliable setup: Specifically designed for left-handed machining workflows, ensuring predictable engagement and steady performance in standard boring and turning operations.

This tiny carbide bar is built to extend tool life, reduce downtime, and deliver consistent finishes across multiple materials. Its coatings and geometry work together to minimize wear, improve surface quality, and keep you productive—whether you’re tackling stainless steels, alloys, or general-purpose turning tasks.