The Carmex Carbide Tiny Tool - Boring Bar is a compact, high-precision tool designed for internal boring and light turning in tight spaces. With a 4.1 mm minimum diameter, a 15 mm reach, and a precise R0.2 nose radius, it enables clean, accurate bore finishes even in restricted work areas. This tiny tool is built for reliability in small-diameter work and is well-suited for engineers, machinists, and hobbyists who demand consistent results without bulky setups.

Housed on a solid K20-grade carbide core, this tiny boring bar delivers dependable wear resistance and long tool life. It supports two coating options to match your application: BXC TiN coated grade optimized for low cutting speeds in stainless steels (ISO P30-P50 / K25-K40) and BMK sub-micron grade with a triple PVD coating for exceptional heat resistance and smooth cutting. While designed for boring, it also handles general turning tasks, giving you a versatile solution for a range of materials.

• Ultra-compact boring geometry: 4.1 mm minimum diameter, 15 mm reach, and a precise R0.2 nose radius to access tight bores and produce accurate finishes in confined spaces.
• Dual coating options for versatile materials: choose BXC TiN for low-speed stainless steel work or BMK triple-coated carbide for high-heat cutting, enabling reliable performance across a wide material range.
• Rigid K20 carbide core for long tool life: solid carbide construction provides wear resistance and stable cutting in boring and general turning, reducing downtime and tool changes.

This tool is built to fit demanding workflows: it delivers consistent bore quality, minimizes setup time, and supports efficient production with reliable performance across stainless steels and other materials. Its compact size and durable carbide core help you complete precision boring and turning tasks with confidence, improving throughput and surface finish in every job.