The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide bar engineered for precision internal boring and general turning. Designed for small, tight features, it features a 4.1 mm minimum diameter, a 30 mm reach, and left-hand geometry with an R0.2 nose radius to deliver clean entry and finished holes in challenging workpieces.

This BMK-grade variant uses sub-micron carbide with an advanced PVD triple coating, delivering exceptional heat resistance and smooth cutting across a wide range of materials. It’s built for reliable performance in production or shop environments, where consistent results and long tool life matter.

• Small-diameter, long-reach bore tool: 4.1 mm minimum diameter and 30 mm reach enable access to tight bores and deep pockets with stable, controlled cuts.
• BMK-grade, triple-coated carbide: Sub-micron carbide with an advanced PVD coating provides high heat resistance and extended edge life for durable, dependable performance.
• Left-hand geometry with 0.2 mm nose radius: Left-hand orientation and a fine R0.2 nose radius ensure smooth entry and compact finishes in internal bores, reducing chatter and improving surface quality.

Designed to streamline your workflow, this tiny boring bar delivers consistent, reliable results across common machining tasks. The durable BMK coating and precise geometry help you minimize tool changes, achieve cleaner hole finishes, and maintain tight tolerances, making it a dependable choice for professional shops and skilled hobbyists alike.