Carmex Carbide Tiny Tool - Boring Bar - MTR - BMK Grade - 5.1mm Minimum Diameter x 15mm Reach x R0.05

The Carmex Carbide Tiny Tool Boring Bar is a line of solid carbide bars designed for precise boring applications and general turning. With a compact 5.1 mm minimum diameter, 15 mm reach, and an R0.05 nose radius, it delivers repeatable bore quality in tight spaces and helps you maintain consistent finishes across projects.

Two coating grades give you the right balance of wear resistance and performance for different materials. BXC is a PVD TiN coated grade optimized for low cutting speeds and works well with stainless steels (ISO P30-P50 / K25-K40). BMK is a sub-micron grade with an advanced PVD triple coating (ISO K10-K20) for maximum heat resistance and smooth cutting, serving as a general-purpose option for all materials.

• Dual coatings for versatile metals: Choose BXC TiN for low-speed stainless steel work or BMK’s triple-coated, high-heat performance for broader material compatibility, giving you flexibility on the shop floor.
• Precise small-diameter boring geometry: 5.1 mm minimum diameter, 15 mm reach, and an R0.05 nose radius enable accurate bores in tight pockets and clean turning finishes.
• Solid carbide durability: Robust carbide construction delivers stiffness and wear resistance for reliable performance in demanding boring and turning tasks.

This tool supports efficient, repeatable results across a range of jobs—from tight bores in stainless steels to general turning on varied materials—while coating options help protect the edge and extend tool life. The combination of precise geometry and durable carbide ensures steady cutting performance, reduced variability, and dependable results from setup to finish.