Wheel Mandrels; For Hole Size (Inch): 1/4; Maximum Wheel Width (Inch): 1; For Hole Size: 1/4 in; Shank Diameter (Inch): 0.1200; Head/Washer Diameter (Inch): 4.3000; Overall Length (Inch): 3; Connector Type: Wheel Mandrel; Minimum Wheel Diameter (Inch): 2;. Ideal for industrial and commercial applications.