Front/Rear Axle Flange Diameter: 5.6750 In. Bolt Circle Diameter: 4.50 In. Wheel Pilot Diameter: 2.8150 In. Brake Pilot Diameter: 2.88 In. Flange Offset: 2.107 In. Hub Pilot Diameter: 3.79 In. Hub Bolt Circle Diameter: 4.5 In. Bolt Size: 1/2-20 Bolt Quantity: 6 Bolt Hole qty: 4 Flange Shape: RECTANGULAR ABS Sensor: No Number of Splines: 31