Introducing the Carmex Carbide Tiny Tool - Boring Bar, a compact solid carbide bar designed for precise internal boring and general turning. With a 3.7 mm minimum diameter, 15 mm reach, and an R0.1 nose radius, it delivers accurate results in tight cavities and shallow bores.

• Ultra-compact boring capability: Designed for access to small, deep features, the 3.7 mm minimum diameter, 15 mm reach, and R0.1 nose radius enable precise bore work and reliable finishes without frequent tool changes.
• Two coating grades for versatile materials: BXC TiN-coated grade provides dependable performance at low cutting speeds on stainless steels (ISO P30-P50 / K25-K40), while BMK’s sub-micron structure with triple PVD coating delivers high heat resistance for broad material compatibility.
• Durable carbide core with protective coatings: Solid carbide construction paired with advanced coatings reduces wear, supports consistent tolerances, and helps maintain smooth cutting over longer runs.

This tiny boring bar is a practical, reliable choice for engineers, machinists, and hobbyists who need precise internal boring and flexible turning capabilities in a compact tool. The selectable coating grades let you tailor performance to your material and process—BXC for stainless steel at lower speeds, or BMK for high-heat, broad-material applications—while the rigid carbide core and optimized geometry help you achieve repeatable finishes with fewer interruptions in your workflow.