EZARC 3 PCS Deburring External Chamfer Tool & Countersink Drill Bit Set, Tungsten Carbide Chamfering Bit, Remove Burr Tools for Fit 1/8" 1 3/8"(3mm 35mm)

【External Chamfering Tool】Perfect for fixing damaged bolts and fasteners. Use lubricating oil with the hardened steel to enhance tool performance. Effortlessly smooth out rough edges on freshly cut pipes, bolts, and more. 【Internal Deburring Tool】 M2 high-speed steel material with surface nitriding treatment. It can be used to drill holes in metals, including countersunk holes. 【Easy to Use】The external chamfering and deburring tool efficiently removes rough edges with minimal effort. Operate at low drill speed (0-400 RPM) with light pressure for best results. Its safety-focused design prevents cuts, sparks, and burns, ensuring smooth application of nuts and fittings for a clean finish. NOTE: Avoid using in impact mode. 【Wide Application】Effectively used in Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum. 【Size】Attach the external chamfering and deburring tool to the end of your drill using the hex shank can be mounted on a drill, Fits 1/8" (3mm) to 1-3/8" (35mm). Operate with sufficient lubrication and less than 400 RPM.