The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide tool designed to tackle precise internal boring and general turning tasks. With a 10.1 mm minimum diameter, a 35 mm reach, and a left-hand orientation, it’s built to access tight bores and deliver dependable finishes in a range of materials.

This tool line offers two coated carbide grades to match your material and cutting speed needs. The BXC grade uses a PVD TiN coating optimized for low cutting speeds and wide stainless-steel compatibility (ISO P30-P50 / K25-K40). The BMK grade is a sub-micron, triple-coated option providing exceptional heat resistance for maximum performance and smooth cutting, suitable for a broad range of materials (ISO K10-K20).

• Coated carbide options for versatile material compatibility: Choose BXC for reliable performance on stainless steels at lower speeds, or BMK for high-heat, general-purpose cutting across many materials, helping you cover more jobs with one tool.
• Extreme heat resistance for long tool life: BMK’s advanced PVD triple coating delivers superior heat tolerance, enabling steadier cuts and fewer tool changes in demanding applications.
• Precise geometry with left‑hand boring capability: The 10.1 mm minimum diameter, 35 mm reach, and R0.2 left-hand geometry provide predictable, consistent finishes in tight bores and pockets, with straightforward setup.

Designed for engineers, machinists, hobbyists, and shop floor personnel, this tiny carbide boring bar delivers dependable performance across job types. Its robust coatings and thoughtful geometry help you finish more parts per shift, minimize downtime, and achieve repeatable results—whether you’re machining stainless steel, tool steels, or alloys that demand stable, smooth cutting.