Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide tool designed for precise internal boring and reliable general turning. With a 6.1 mm minimum diameter, 22 mm reach, and a left-hand orientation featuring a nose radius of R0.05, it delivers predictable performance in tight bores while maintaining clean, consistent finishes. This versatile tool is crafted for engineers, machinists, and hobbyists who require dependable results on stainless steels and a wide range of materials.

This tool line offers two coating grades to match your application. The BXC grade uses a PVD TiN coating optimized for low cutting speeds and broad stainless-steel compatibility (ISO P30-P50 / K25-K40), providing steady wear resistance in slower, controlled passes. The BMK grade employs a sub-micron substrate with an advanced triple PVD coating for maximum heat resistance and smooth cutting, making it well-suited for demanding materials and general-purpose use.

• Dual-grade coatings for broad material compatibility: Choose BXC TiN for low-speed stainless work or BMK’s triple-coated, high-heat resistance performance to tackle tougher materials with reliable, predictable cuts.
• Compact size for tight bores: 6.1 mm minimum diameter, 22 mm reach, and a left-hand orientation with a nose radius of R0.05 enable precise access to constrained cavities and consistent bore geometry.
• Durable carbide for long tool life: Solid carbide construction combined with advanced coatings delivers durable cutting performance, reduced wear, and stable results across boring and general turning tasks.

This tool is designed to streamline internal boring work and general turning, delivering repeatable finishes, longer tool life, and confident performance in challenging applications. The combination of compact geometry, left-hand alignment, and purpose-built coatings helps you finish jobs faster, reduce downtime, and achieve reliable, high-quality results across a broad range of materials.