Carmex Carbide Tiny Tool - Boring Bar - MTL - K20 Grade - 2.1mm Minimum Diameter x 5mm Reach x R0.05 (Left Hand)

Carmex Carbide Tiny Tool - Boring Bar - MTL - K20 Grade is a compact, solid carbide bar designed for precision small-diameter boring and general turning work. With a 2.1 mm minimum diameter, 5 mm reach, and left-hand cutting geometry, it excels in tight spaces and close-tolerance holes—making it a reliable choice for engineers, machinists, and hobbyists working on miniature components.

Built from durable carbide and offered with two PVD-coated grades, this tool delivers dependable performance across a range of materials. The BXC TiN coating is optimized for low cutting speeds and stainless steels (ISO P30-P50 / K25-K40), while the BMK sub-micron grade with a triple PVD coating provides exceptional heat resistance and smooth cutting for demanding materials. Whether you’re boring or performing general turning, this tiny tool is ready for precise, repeatable results.

• Compact mini boring bar (2.1 mm min dia, 5 mm reach, left-hand): Designed for tight bores and hard-to-reach features, it provides precise control and consistent hole placement in small components.
• Dual PVD coating options for versatility: BXC TiN supports low-speed cutting on stainless steels (ISO P30-P50 / K25-K40) for wear resistance, while BMK triple-coated offers high heat resistance and smooth cutting across a wide material range (ISO K10-K20).
• Fine nose radius for smooth finishes: R0.05 nose design minimizes chatter and yields clean bore surfaces, enhancing part quality and reducing secondary finishing steps.

These features translate into reliable, repeatable performance that helps you finish tight-tolerance bores more quickly, extends tool life in demanding materials, and delivers consistent surface quality across production runs.