Union Tool Carbide Drill Coated Drill φ0.21 x Blade Length 2.5 C-UMD2021-025 1 piece

Catalog number: C-UMD2021-025 Features: ● A precision drill with a long life. ● Longer life than general coated drills. ● Chip pocket shape for efficient chip removal. Applications: ● Workpiece: Aluminum alloy, carbon steel, alloy steel, pre-hardened steel, hardened steel (hardness 45HRC or less), cast iron, copper. Specifications: ● Blade diameter (mm): 0.21 ● Groove length (mm): 2.5 ● Total length (mm): 38 ● Shank diameter (mm): 3 ● Effective machining depth: 4 to 12D (blade diameter x 4 to 12 times) ● Surface treatment: UT micro coating ● Outer diameter (φD): 0.21 ● UT micro coating Material / Finish: ● Ultra-fine particle alloy (Super MG)