The Carmex Carbide Tiny Tool – Boring Bar in MTL TNX Grade is a compact, solid carbide bar designed for precision boring and versatile enough for general turning. Built for small-diameter work, it delivers clean holes and reliable finishes. With a 4.1 mm minimum diameter, 10 mm reach, and a left-hand R0.2 geometry, it fits tight bores and constrained setups while maintaining consistent results across a range of materials. This toolline is part of Carmex's MTL TNX Grade family.

Choose from two coating options to match your workpiece and cutting speed: BXC TiN-coated grade for low-speed cutting and strong performance with a wide range of stainless steels (ISO P30-P50 / K25-K40); or BMK, a sub-micron grade with advanced PVD triple coating offering extremely high heat resistance for maximum performance and smooth cutting across many materials (ISO K10-K20).

• Compact, precise boring geometry: The 4.1 mm minimum diameter, 10 mm reach, and left-hand R0.2 edge let you access tight bores and features in small parts with predictable, clean finishes.
• Coating options for versatile performance: Choose BXC TiN for low-speed stainless work, or BMK for high heat resistance and smooth cutting across a broad material range.
• Rigid, durable carbide construction: Built from solid carbide in the MTL TNX Grade family to provide consistent cutting performance and long tool life for boring and general turning tasks.

By delivering precise hole quality, extended tool life, and adaptable performance, the Carmex Tiny Tool helps streamline your machining workflow. It reduces downtime, maintains part tolerances, and delivers reliable finishes across stainless steels and other common materials, making it a dependable choice for engineers, machinists, and hobbyists alike.