Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide tool designed for precision boring and versatile turning tasks. With an 8.1 mm minimum diameter, a 22 mm reach, and a left-hand orientation, this tiny bar is built to access tight bores and internal features while delivering repeatable, clean cuts. It’s part of Carmex's carbide family, engineered for reliability in everyday shop environments—from engineers and machinists to hobbyists who demand consistent results.

The tool line features coatings tuned to different workloads: the BXC grade with PVD TiN coating is optimized for low cutting speeds and pairs well with stainless steels (ISO P30-P50 / K25-K40), helping reduce wear and keep feeds steady. The BMK grade uses a sub-micron structure with an advanced PVD triple coating for exceptional heat resistance and smoothly controlled cutting across a broad material range.

• Tiny-bore geometry for tight work: 8.1 mm minimum diameter, 22 mm reach, and R0.2 left-hand orientation enable precise boring in small bores and slender features.
• TiN-coated BXC grade for smooth, low-speed cutting: reduces friction and wear, delivering reliable performance on stainless steels at lower cutting speeds.
• BMK sub-micron grade for high-heat durability: advanced coating provides excellent heat resistance for demanding materials and extended tool life.

This combination of compact size, proven carbide stiffness, and coating versatility helps you complete challenging internal work with fewer tool changes, consistent diameters, and improved surface finish—so you can complete projects faster and with less rework.