The Carmex Carbide Tiny Tool - Boring Bar for MTL is a compact, solid carbide bar designed for precise boring and general turning. With a 5.1 mm minimum diameter, a 22 mm reach, and a left-hand orientation (R0.1), it’s built to access tight bores and maintain tight tolerances in demanding metalworking tasks. The base is a K20-grade carbide, delivering stiffness and durability for reliable performance over long runs.

This tiny tool line is optimized for both dedicated boring operations and versatile turning jobs, making it a practical choice for engineers, machinists, and hobbyists alike. Its coatings provide flexibility across materials, including stainless steels, and are designed to enhance life and cut quality in real-world shop conditions.

• Compact, precise boring geometry: 5.1 mm minimum diameter, 22 mm reach, and left-hand orientation enable accurate holes in tight spaces with consistent depth control.
• Coatings designed for versatility: Choose the BXC TiN-coated grade for low cutting speeds and stainless steels (ISO P30-P50 / K25-K40), or the BMK sub-micron grade with triple PVD coating for exceptional heat resistance and smooth cutting across a wide range of materials.
• K20 carbide core for durability: A rigid, wear-resistant carbide base supports stable cutting and helps maintain tolerances and surface finish over extended tool life.

In use, this Carmex tiny boring bar delivers dependable performance in confined spaces while handling a variety of materials. The combination of precise geometry, durable K20 carbide, and advanced coatings supports steady finishes, reduced downtime, and overall workflow efficiency—making it a reliable choice for professional shops and serious hobbyists alike.