The Carmex Carbide Tiny Tool is a compact solid carbide boring bar designed for precision internal work and light turning. With a minimum diameter of 3.1 mm, a 10 mm reach, and a tight R0.1 corner radius, it is built to access tight bores and deliver consistent, accurate finishes. This tool is ideal for engineers, machinists, and hobbyists who need reliable performance in small-diameter applications.

Designed for versatility, this toolline is offered in two high-performance grades. BXC TiN-coated carbide provides efficient cutting at lower speeds and excels with a wide range of stainless steels (ISO P30–P50 / K25–K40). BMK-grade carbide features a sub-micron structure with a advanced PVD triple coating, delivering exceptional heat resistance, smooth cutting, and suitability as a general-purpose option across materials (ISO K10–K20).

• Compact size for tight bores: The 3.1 mm minimum diameter and 10 mm reach let you reach deep, confined interiors while maintaining precise depth and wall control for clean, accurate holes and features.
• Two optimized coating options for versatility: Choose BXC TiN for dependable performance at lower speeds on stainless steels, or BMK’s sub-micron, triple-coated carbide for high heat resistance and smooth cuts across a broad material range.
• Rugged carbide performance you can count on: Solid carbide construction provides rigidity and wear resistance, delivering consistent results, longer tool life, and reduced downtime in demanding boring and turning tasks.

This tiny boring bar helps you complete precise internal features faster, with repeatable finishes and fewer tool changes. Its tailored coatings and robust construction support stable cuts, improved part quality, and greater overall productivity across a variety of materials and applications.