Easy to mount/replacement with the shaft.Umbrella type brush that is easy to operate due to compact and high-speed rotation, excellent usability.Since it is an umbrella type, it is optimum for polishing cylindrical inner diameter and bottom part.Working Tool: Variable speed type electric micro grinder.Wire Diameter (mm):0.1Bristle Material:Hard Steel WireOuter Diameter x Bristle Length x Shaft Length x Shaft Diameter (mm):10 x 8 x 36 x 3Max Working Rotation Speed (rpm):10000Comments:Delamination and grinding of metal productsShaft: BrassAir tools cannot be used.Please use below The maximum working rotation speed. Please wear protective equipment to use safely.