The Carmex Carbide Tiny Tool is a micro boring bar crafted from solid carbide (K20 grade). With a 1 mm minimum diameter, 4 mm reach, and a left-hand geometry featuring an R0.05 tip, it’s built for clean, accurate internal cuts on small parts. While optimized for boring, it also handles a wide range of general turning tasks, giving you a compact, versatile tool for delicate work and fine tolerances.

This tiny tool is offered in two high-performance grades to match different materials and speeds. BXC is a PVD TiN-coated grade designed for low cutting speeds and broad stainless-steel compatibility (ISO P30-P50 / K25-K40). BMK is a sub-micron grade with advanced PVD triple coating, delivering exceptional heat resistance and smooth cutting for demanding applications (ISO K10-K20). These options let you tailor the tool to the job without switching tools.

• Dual coating options for versatility: BXC TiN-coated for low-speed cutting and stainless steels, or BMK’s triple-coated sub-micron grade for high-heat performance—so you can tackle a wide range of materials with one tiny tool.
• Micro-diameter bore bar with long reach: 1 mm minimum diameter and 4 mm reach, plus a precise R0.05 radius for tight internal features and smooth bore finishes in confined spaces.
• Solid carbide efficiency and heat resistance: K20-grade carbide combined with advanced coatings delivers durable cutting life, stable performance, and reliable results across challenging materials.

This micro boring tool helps you complete precise internal work with fewer tool changes, better surface finishes, and consistent results. Its small footprint fits into tight bores while maintaining rigidity and control, enabling smoother workflows, tighter tolerances, and improved productivity across a variety of materials.