Wheel Mandrels; For Hole Size (Inch): 1/4; Maximum Wheel Width (Inch): 1; For Hole Size: 1/4 in; Shank Diameter (Inch): 1/4; Head/Washer Diameter (Inch): 3/4; Overall Length (Inch): 2; Connector Type: Wheel Mandrel; Minimum Wheel Diameter (Inch): 2; Maxim. Ideal for industrial and commercial applications.