The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide bar designed for precision boring and general turning tasks, built to perform in tight bores and small-diameter workpieces. It comes in two coating grades to tackle different materials and conditions—BXC (PVD TiN) for low-speed cuts on stainless steels, and BMK (sub-micron grade with triple PVD coating) for high heat resistance and smooth cutting. Key specs include a 5.1 mm minimum diameter, 30 mm reach, and left-handed geometry with a 0.2 mm nose radius (R0.2).

• Compact bore-ready geometry: 5.1 mm minimum diameter, 30 mm reach, and a 0.2 mm nose radius (R0.2) provide precise entry and reliable cutting in tight bores and small-diameter workpieces.
• PVD-coated carbide for stainless steel reliability: BXC grade with TiN coating delivers improved wear resistance and smoother cuts at low speeds, ideal for stainless steels ISO P30-P50 / K25-K40.
• BMK grade for high heat and broad material compatibility: Sub-micron BMK with triple PVD coating offers exceptional heat resistance and smooth cutting, making it a strong general-purpose choice across materials.

Whether you're finishing a tight bore, performing delicate turning, or pushing small-diameter limits, this Carmex Tiny Tool delivers repeatable results with long tool life. The carbide core stands up to tough materials, while the advanced coatings minimize wear and heat buildup. The compact size and left-hand geometry support efficient setups, reduce tool changes, and help you achieve cleaner surface finishes with less downtime.