The Carmex Carbide Tiny Tool - Boring Bar - MTL - TNX Grade - 2.1mm Minimum Diameter x 5mm Reach x R0.05 (Left Hand) is a precision solid carbide bar designed for miniature boring and turning tasks. Its compact 2.1 mm minimum diameter and 5 mm reach let you access tight features in small workpieces while maintaining stable, accurate cuts. The left-hand geometry supports efficient material removal in the right setups, and the 0.05 mm corner radius helps preserve workpiece strength and achieve clean, precise holes.

Within Carmex's TNX grade family, these bars are paired with specialized coatings to match cutting speed and material. The BXC coating uses PVD TiN for reliable performance at low cutting speeds, especially with stainless steels. The BMK grade features a sub-micron structure with a triple PVD coating for high heat resistance and smooth cutting across a broad range of materials. This combination gives you flexibility and dependable results across micro-machining tasks.

• Tiny-diameter, long-reach design: The 2.1 mm minimum diameter and 5 mm reach with a precise R0.05 nose let you access tight bores and small parts, reducing tool changes and enabling accurate hole geometry.
• Coated versatility for challenging materials: BXC TiN coating supports low-speed cutting on stainless steels for steady wear resistance, while BMK’s sub-micron, triple coating delivers high heat resistance and smooth cutting across a wide material range.
• Left-hand geometry for stable, repeatable results: The left-hand configuration supports consistent bore quality and reduces chatter in suitable setups, helping you achieve reliable finishes in micro-machining tasks.

This tiny carbide boring bar is designed to improve workflow by enabling miniature bore and turning work in fewer passes, with tight tolerances and clean finishes. Built from durable solid carbide, it delivers long tool life and dependable performance in busy shops. The specialized coatings further reduce heat and friction, helping you sustain cutting performance and consistent results across materials.