Material: Made of high quality CR12MOV molybdenum vanadium, high strength and high hardness. High temperature resistance, rust prevention and corrosion resistance. Easy operation: just use the lowest speed on the bit, then lightly applying pressure to remove the burr. Simplifies the repair process and reduces repair time, improves efficiency. Eliminates the need to replace an expensive or hard-to-find hardware tool. Effective On: Great for removing burrs and ridges from tubing or threaded rods, hardness 50. Quickly repair damaged screws, effective on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic nuts. It can also be used as a bottle opener. Safety: Simple with conscientious safety design, eliminates burrs and will not hurt your hands, no sparks and no burns, will not damage not the tools. The compact size means the tool can be easily carried in the tool bag. It can be used to polish the workpiece with or without threads. Suitable for all types of drill bits. 100% Satisfaction Guarantee: Dear friend, we appreciated for your purchase of our External Chamfer Deburring, we sincerely hope you can get satisfied service and products. high quality in our store .Any problems,contact us at the first time.Full refund guarantee or free replacement if you are not satisfied with our deburring chamfer tool! Wish you a happy shopping tri! Deburring Chamfer Tool,Hexa and Triangular for External Deburring Chamfering Drill,Quickly Repair Damaged Bolts Features: < p>1.Remove deburring without hurting the hand and improve efficiency. 2.Suitable for various electric drills to meet the needs of different occasions. 3. simplifies the repair process, eliminates the need to replace expensive or hard-to-find deburring tool. 4.Operation is simple, bit speed is lowest, pressure is light and the burr can be removed. 5.It can be used to polish the workpiece with or without thread.