●Flat type brush that is easy to operate due to compact and high-speed rotation, and has excellent usability.●It is an affordable bag including 50 pieces.●Polishing of fine parts.●Polishing of fine grooves.●Corner adjustment.●Polishing of uneven areas.●Polishing of pipe's inner side.●Working Tool: Variable speed type electric micro grinder.●Wire Diameter (mm):0.10●Bristle Material:Stainless Steel●Outer Diameter (mm):23●Shaft Length (mm):40●Shaft Diameter (mm):3●Max Working Rotation Speed (rpm):15000●Comments:Polishing of stainless steel, aluminum products.●Shaft: Free-Cutting Steel