Weiler 4" Standard Twist Knot Wire Wheel Brush provides a heavy-duty brushing action with some flexibility for demanding deburring cleaning and surface preparation applications on somewhat irregular surfaces. 5/8"-11 nut for use on right angle grinders. Features Provide heavy-duty brushing action with some flexibility Ideal for demanding cleaning applications on somewhat irregular surfaces Prop 65 WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to:www.P65Warnings.ca.gov Specifications Country of Origin: United States of America Industry: Manufacturing Application: Cleaning | Deburring Marketing Application: Demanding cleaning applications on somewhat irregular surfaces Material Application: Steel Performance: High-Performance Compatible Tool: Right Angle Grinder Fill Material: Steel Length: 3.9000 Inches Width: 3.9500 Inches Height: 0.8500 Inches Standard Pack Quantity: 5 Maximum RPM: 20000 Face Width Dim: 1/2 IN Fill Diameter Dim: 0.020 IN Trim Length Dim: 7/8 IN