ITEM NAME:5Pcs 25mm Polishing Brush Wire Wheel Brushes for Drill Rotary Tool OH Features 100% brand new. Ideal for removing rust/ corrosion from any metal surfaces, especially precious metals. Suitable for your die grinder & rotary machine tools. Material: Stainless steel. Wheel Brush Diameter: 25mm (0.98" approx). Shank Length: 40mm (1.57" approx). Shank Diameter:3.17mm (0.12" approx)..Suitable for your die grinder & rotary machine tools. Material: Stainless steel.