The Carmex Carbide Tiny Tool - Boring Bar - MTR - BMK Grade is a compact, solid carbide tool designed for precise internal boring and light turning on small-diameter workpieces. With a 5.1 mm minimum diameter, a 30 mm reach, and an R0.2 nose radius, it helps you reach tight spaces while maintaining accurate hole size and a clean finish. Ideal for engineers, machinists, hobbyists, and shop floors that value dependable performance in everyday precision work.

This tool line backs its performance with two high-grade coating approaches. BMK is a sub-micron carbide option with advanced PVD triple coating, delivering exceptional heat resistance for maximum performance and smooth cutting across demanding materials. The same line also offers BXC with PVD TiN coating for low cutting speeds, enhancing efficiency on stainless steels. Together, they provide versatility for a wide range of materials while staying focused on reliability and long tool life.

• Small-diameter precision for tight bores: 5.1 mm minimum diameter, 30 mm reach, and a 0.2 mm nose radius give you accurate internal holes in confined spaces with consistent finishes, reducing rework.
• High-heat, smooth-cut BMK coating: Sub-micron BMK with advanced PVD triple coating stands up to heat and maintains sharpness, extending tool life and delivering smoother cuts in challenging materials.
• Versatile material compatibility: Optimized for stainless steels ISO P30-P50 / K25-K40 and general-purpose use, offering reliable performance across a broad range of turning and boring applications.

The Carmex Tiny Tool delivers dependable, repeatable results that support smoother workflows, fewer tool changes, and consistent hole quality. Its robust carbide construction and coatings are designed to withstand real-world machining, helping you complete jobs faster with confidence and a professional finish.