Guhring Carbide Coated Drill, Carbide Small Diameter Drill Alumina Coating, Blade Diameter 1.97mm, 3899 001.970, 1 Piece

Catalog number: 3899 001.970 Features: ●Ultra-fine grain carbide alloy is used to achieve stable cutting edge strength, rigidity, breakage resistance, and high-quality cutting edge shape with little variation. ●TiAlN coating provides long life and stable machining. ●Shank diameter is standardized to 3 mm for ease of use. ●Ideal for ultra-small diameter metal processing and high-precision small diameter drilling for electronic devices. Applications: ●Cutting materials: general structural steel, carbon steel, alloy steel, stainless steel, cast iron, aluminum alloy, special alloy. Specifications: ●Blade diameter (mm): 1.97 ●Groove length (mm): 12 ●Total length (mm): 38 ●Shank diameter (mm): 3 ●Effective machining depth: 4D (blade diameter x 4 times) ●Tip angle (°): 140 ●Surface treatment: Alumina coating Material/Finish: ●Ultra-fine grain carbide alloy