Carmex Carbide Tiny Tool - Boring Bar - MTR - K20 Grade - 5.1mm Minimum Diameter x 30mm Reach x R0.2

The Carmex Carbide Tiny Tool - Boring Bar (MTR - K20 Grade) is a compact solid carbide bar engineered for precise boring and reliable general turning. With a 5.1 mm minimum diameter, 30 mm reach, and a nose radius of R0.2, it excels in tight bores and intricate features where space is limited. This small, rigid tool is ideal for engineers, machinists, and hobbyists who need accurate diameters and clean finished surfaces in confined areas.

Designed for versatile performance, this tool line offers coating options that balance speed, material compatibility, and heat resistance. Whether you’re working with stainless steels or a broad mix of materials, the right coating choice helps you maintain steady cutting action and consistent results across a range of applications.

• Ultra-compact boring bar for tight bores: A small 5.1 mm minimum diameter with a 30 mm reach and R0.2 nose radius enables precise bore sizing and access to deep, restricted features without frequent tool changes.
• Dual coating system for versatility: BXC TiN coating is optimized for low cutting speeds on stainless steels (ISO P30-P50 / K25-K40), while BMK offers a sub-micron grade with a triple PVD coating for high heat resistance and smooth cutting across materials.
• Durable carbide with smooth cutting: Solid carbide core paired with advanced coatings delivers stable cutting action, extended tool life, and consistent surface finishes across a broad material range.

With this tiny boring bar, you gain dependable diameter control, smooth finishes, and efficient tool life in a compact form factor. It helps streamline setups, reduces downtime between operations, and supports consistent results whether you’re boring tight pockets or performing general turning tasks on a variety of materials.