The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide cutting solution designed for small-diameter internal operations and precise turning tasks. It handles bores as small as 5.1 mm, reaches 15 mm into tight features, and features a fine R0.05 nose radius for clean, consistent finishes in confined spaces. This tool is well-suited for engineers, machinists, and hobbyists who need reliable performance on small parts.

Built with a TiN-coated BXC grade, it delivers durable performance at lower cutting speeds and pairs well with stainless steels (ISO P30-P50 / K25-K40). The combination of hardened carbide and protective coating reduces wear, extends tool life, and helps maintain tight tolerances across a range of common materials.

• Small-diameter bore capability: Bores holes as small as 5.1 mm with a 15 mm reach for deep, narrow features, enabling precise work in tight spaces.
• TiN-coated BXC grade for durable, low-speed cutting: PVD TiN coating reduces wear at low speeds and performs well on stainless steels, extending tool life.
• R0.05 nose radius for smooth finishing: Finely tuned nose radius delivers smooth cutting action, minimizes chatter, and yields consistent surface quality.

Whether you’re refining internal pockets, finishing small-diameter bores, or performing general turning in restricted areas, this tiny boring bar offers predictable performance, long tool life, and the confidence to complete precise work with fewer tool changes.