Vearter External Chamfer Drill Bits Deburring Tool with 3 Flute Carbide Blades for Metal Steel, Removal Burr Tools Quick Release Shank Fits 1/8" (3mm) to 3/4" (19mm) - HJ-DJD-Hex-20mm

• Great for repairing damaged bolts and fasteners Hard steel could use lubricating oil to improve tool performance. This external deburring chamfer works by a way of shearing metal layer by layer. Using the lowest speed on the drill bit, and then slightly applying pressure to remove the burr. safety conscientious design means no cut hands, no sparks, and no burns. Effective applied to hardened steel, mild steel, copper, brass, fiberglass and hard plastic. Made of High Speed Steel and it has a cutter ability. Drill use 0-400 RPMs Fit 1/8' (3mm) to 3/4' (19mm)