ITEM NAME:Black Steel Deburring External Chamfer Tool Bit Remove Burr Repairs Tools Z9V1 Black Steel Deburring External Chamfer Tool Bit Remove Burr Repairs Tools Z9V1 100% new high quality. Durable, practical and high strength. Easy to use. Function: Quickly repair damaged bolts and tighten nuts. Simplify the repair process without having to replace hard-to-find hardware accessories. Easy to operate. Use the lowest speed and then apply a little pressure to remove the burrs. Suitable for all kinds of chuck drills. Suitable for aluminum, copper, wood, fiberglass, etc. Colour: Black Material: steel Dimensions (approx.): inner ring diameter 22mm / 0.87inch, outer ring diameter 28mm / 1.10inch Package Contents: 1 * deburring bit.Easy to operate. Use the lowest speed and then apply a little pressure to remove the burrs. Material: steel. Colour: Black.