●Easy to select sizes because it is tapered.●Working efficiency is greatly improved because compared to manual work because it can be used on impact screwdriver.●Used for drilling on every pipe and burring work after cutting.●Wire Diameter (mm):0.2●Total Length (mm):135●Outer Diameter (mm):24●Brush Length (mm):80●Shaft Diameter (mm):4.1●Bristle Material:Stainless Steel (SUS304)●Max Working Rotation Speed (rpm):2000