Carmex Carbide Tiny Tool - Boring Bar - MTL - TNX Grade combines a compact, precise form with the reliability of solid carbide. With a 4.1 mm minimum diameter, 15 mm reach, and a left-hand orientation at a 0.2 mm nose radius, this tiny bar is built for tight bores and close-tolerance turning. It’s designed for boring as the primary task, yet it remains capable of handling general turning jobs, making it a versatile choice for small-diameter work in demanding shop environments.

This tool is part of Carmex’s solid carbide bar family and offers coating options to match material and speed needs. BXC is a PVD TiN coated grade optimized for lower cutting speeds and works well with a wide range of stainless steels (ISO P30-P50 / K25-K40). BMK is a sub-micron grade with an advanced PVD triple coating, delivering extremely high heat resistance and smooth cutting, suitable for general-purpose use across many materials.

• Compact, precision boring bar: 4.1 mm minimum diameter with 15 mm reach and a 0.2 mm nose radius, left-hand geometry designed for tight bores and controlled depth of cut.
• Coating options for versatile materials: BXC PVD TiN coating for low cutting speeds and stainless steels; BMK sub-micron grade with triple PVD coating for high heat resistance and smooth cutting across materials.
• Left-hand geometry for reliable finishes: Optimized cutting direction and small nose radius help achieve consistent bore finishes and stable performance in challenging setups.

Designed to improve workflow and reduce rework, this tiny carbide boring bar delivers repeatable hole quality, longer tool life through appropriate coatings, and reliable performance across a range of materials. Its compact size and specialized geometry make it a practical choice for precision boring and light turning tasks, helping you complete tight, accurate work with confidence.