Carmex Carbide Tiny Tool - Boring Bar, MTL, TNX Grade, 8.1 mm minimum diameter, 35 mm reach, left-hand with a 0.2 mm nose radius (R0.2). This solid carbide bar is designed for precise boring and general turning tasks, packaged in a compact form that fits tight bores and close-tolerance features. The TNX grade designation signals optimized performance for a range of materials, making it a reliable choice for shops that demand consistent results across demanding bore work.

Two coated grades give you flexible, high-performance options. BXC is a PVD TiN coated grade engineered for low cutting speeds and effective work on stainless steels (ISO P30-P50 / K25-K40), helping reduce wear and extend tool life. BMK is a sub-micron grade with an advanced PVD triple coating, delivering extremely high heat resistance and smooth cutting for maximum performance across materials. These coatings help you maintain steady feeds and finishes while handling demanding boring and turning tasks.

• Compact boring bar with 8.1 mm minimum diameter and 35 mm reach: Access tight internal features and close-tolerance bores with stable engagement and predictable results, reducing setup time.
• Dual coating grades for versatility and durability: BXC TiN coating supports low-speed boring on stainless steels (ISO P30-P50 / K25-K40); BMK’s sub-micron grade with triple PVD coating provides high heat resistance for smooth cutting across all materials.
• Left-hand configuration with R0.2 nose radius: Ensures stable entry, cleaner finishes, and consistent tool behavior in boring and turning applications.

The Carmex Tiny Tool helps you cut with confidence. Its carbide core and purpose-built coatings translate to longer tool life, fewer tool changes, and more reliable diameters in boring operations. Whether you’re in a high-make shop or a DIY workstation, this tool supports faster setup, steadier cuts, and better surface quality, improving overall workflow and part quality from pass to pass.