●Tip parts such as impact drivers and electric drills ●Cleaning pipes and screw holes ●Deburring inside diameter ●Shaft Diameter: Hex 0.25 inch (6.35 mm) ●Polishing part: φ0.7 x 2.4 inches (19 x 60 ●Line: Nylon ●Maximum Rotational Speed: 3,600 per minute