Meet the Carmex Carbide Tiny Tool Boring Bar in BMK Grade—a compact, solid carbide solution designed for precise boring and reliable general turning. With a 4.1 mm minimum diameter, 10 mm reach, and a left-hand R0.1 geometry, it delivers consistent bore sizes in tight features across a range of materials.

• Coating options optimized for speed and materials: The BXC TiN coating is designed for low cutting speeds and pairs well with stainless steels (ISO P30-P50 / K25-K40). The BMK grade uses a sub-micron, triple PVD coating that delivers outstanding heat resistance and smooth cutting for broad material compatibility.
• Compact, left-hand geometry for precise bores: With a 4.1 mm minimum diameter, 10 mm reach, and a left-hand R0.1 geometry, it delivers tight, repeatable bore sizes with predictable cutting direction in small-diameter workpieces.
• Durable carbide construction with high-heat coatings: Solid carbide bars paired with BMK’s coating system provide high heat resistance and smooth cutting, supporting reliable performance even on tougher materials and longer production runs.

The Carmex Tiny Tool Boring Bar helps you maintain accurate tolerances, finish quality, and productivity across boring and turning tasks. Its compact dimensions, left-hand geometry, and coating versatility let you tailor performance to your material and speed, reducing downtime and improving overall results.