Carmex Carbide Tiny Tool is a solid carbide boring bar built with MTR - TNX grade carbide for reliable performance in tight spaces. Designed for small-diameter bores and general turning, its exacting geometry supports precise starts and clean finishes. With a 4.1 mm minimum diameter, 30 mm reach, and a nose radius of R0.2, this tool handles tight cavities and short, accurate passes with confidence.

Two coating grades are available to match material and cutting conditions. The BXC TiN-coated grade is optimized for low cutting speeds and works well with stainless steels (ISO P30-P50 / K25-K40), delivering longer tool life and steadier cutting in demanding stainless applications. The BMK sub-micron grade features a triple PVD coating for exceptional heat resistance and smooth cutting across a broad range of materials, making it a dependable all-material option.

• Small-diameter bore capability: The 4.1 mm minimum diameter, 30 mm reach, and R0.2 nose radius enable precise entry into tight bores and produce clean, accurate passes in confined spaces.
• TiN-coated BXC grade for stainless steel: Optimized for low cutting speeds, it extends tool life and provides stable cutting when machining stainless steels (ISO P30-P50 / K25-K40).
• BMK sub-micron grade with triple PVD coating: High heat resistance and smooth cutting across a broad material range, delivering reliable performance in demanding operations.

By combining a robust carbide core with advanced coatings, this tiny boring bar supports consistent hole quality, reduces tool changes, and speeds up workflows across stainless steel and other metals. Its durable construction and precise geometry help you achieve better finishes, fewer reworks, and predictable results from setup to shutdown.