The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide solution built for precise internal boring and general turning in tight spaces. Made from K20-grade carbide, this left-hand bar delivers stiffness and wear resistance for long tool life, helping you maintain accurate bore sizes in small components. With a 4.1 mm minimum diameter, a 30 mm reach, and a precise R0.2 nose radius, it’s designed to deliver clean, consistent cuts in challenging setups.

Two coating options maximize durability and performance across common materials. The BXC grade uses a PVD TiN coating optimized for low cutting speeds and works well with a wide range of stainless steels (ISO P30-P50 / K25-K40). The BMK grade features a sub-micron carbide with an advanced PVD triple coating, delivering extremely high heat resistance and smooth cutting for a broad material range. Both options provide reliable, long-lasting performance in everyday machining.

• Compact, precise boring bar: 4.1 mm minimum diameter, 30 mm reach, and R0.2 nose radius in a left‑hand configuration for clean, accurate holes in tight spaces.
• Two coating options for real-world durability: BXC with TiN boosts performance at low speeds on stainless steels; BMK’s sub‑micron grade with triple coating offers exceptional heat resistance and smooth cutting across many materials.
• Rugged, versatile carbide construction: K20‑grade solid carbide provides stiffness and wear resistance for long tool life, with a design that supports reliable results in boring and turning tasks.

This tiny tool is designed to streamline your workflow: it reaches deep into small bores, reduces setup time, and delivers consistent results across materials. Whether you’re producing tight features in precision parts or performing routine internal turning, you can rely on stable cuts, good surface finish, and predictable performance from this dedicated boring bar.