Catalog number: UMD-3.9 Features: ●There is a small diameter drill at the tip, and the second stage has a circular blade that performs end mill cutting, so even thin plates and plastic resins will not crack and will make clean holes without burrs on the back. ●A new drill that combines a centering drill and an end mill allows cutting at twice the feed speed, resulting in high efficiency. Applications: ●Cutting materials: Ideal for aluminum, steel, resin, and other plates, rivet pilot holes, pipes, H-shaped steel, and thick plates. Specifications: ●Blade diameter (mm): 3.9 ●Groove length (mm): 51 ●Total length (mm): 79 ●Shank diameter (mm): 3.9 ●Effective machining depth: 51 Material/Finish: ●High-speed steel (HSS)
