The Carmex Carbide Tiny Tool is a precision internal-threading solution built for tight spaces. With a 5.1 mm minimum bore diameter and a 22 mm reach, it's ideal for 55° MIR partial threads in small bores across a range of materials. Its compact form helps machinists, engineers, and hobbyists tackle hard-to-reach threads without compromising accuracy.

Crafted from carbide and finished with advanced coatings, this tiny tool uses a BMK grade with a sub-micron structure and a triple PVD coating (ISO K10–K20) for maximum heat resistance and smooth cutting. In addition, the BXC TiN coating is optimized for low cutting speeds, helping minimize wear when threading tough materials like stainless steels across ISO ranges P30–P50 / K25–K40.

• 55° partial-profile threading for tight internal bores: Cuts precise 55° MIR partial threads in small bores with a 1.2 mm minimum diameter and 22 mm reach, letting you work in confined spaces without sacrificing accuracy.
• Durable, multi-coated carbide for long life: BMK sub-micron grade with triple PVD coating (ISO K10–K20) together with BXC TiN coating deliver excellent heat resistance and wear protection, enabling reliable cuts at low speeds, especially on stainless steels.
• Versatile performance across materials: General-purpose carbide tool designed to handle a wide range of materials, including stainless steels (ISO P30–P50 / K25–K40), with smooth cutting operation and consistent results.

This tiny threading tool helps you streamline workflows by reaching deep into small bores, delivering consistent 55° threads with minimal tool changes. The advanced coatings reduce heat and wear, promoting reliable performance over more cycles, while broad material compatibility ensures it fits into many projects—from precision assemblies to hobbyist builds. Trustworthy, repeatable results come from a true micro-tool designed for accuracy and durability.