●Easy to mount/replacement with the shaft.●Flat type brush that is easy to operate due to compact and high-speed rotation, and has excellent usability.●Fine grooves, corner adjustment, uneven areas, polishing of pipe's inner side.●Working Tool: Variable speed type electric micro grinder.●Wire Diameter (mm):0.20●Bristle Material:Aramid Fiber●Outer Diameter x Shaft Length x Shaft Diameter (mm):20 x 40 x 3●Max Working Rotation Speed (rpm):15000●Comments:Finishing, Cleaning of Dies and Molds●Shaft: Free-Cutting Steel