Parts list: № Number Qty Name Options 1 AL118451 2 Wheel W12X28, For Tire Size Refer to Tire Manual of Manufacturer Next page: ST709662 Steel Disk Front Wheels, 2 Position, W10X28, 275 mm Bolt Circle Diameter ST709894 Rear Wheel Weights, 4 Weights, Inside Rear Wheel, W/ Reinforcement, 55 kg (121 lb) ST726768 Mounting Parts, Rear Wheels, Flange Axle, 203 mm Bolt Circle Diameter ST728243 Attachment, Hub Extension 60 mm, Front, Tread Adjustment ST728245 Attachment, Hub Extension, 44 mm, Rear, Tread Adjustment ST709655 Steel Disk Front Wheels, 2 Position, W15LX28, 275 mm Bolt Circle Diameter ST709634 Front Wheels, Adjustable, 16 Position, W10X28 ST709632 Steel Disk Front Wheels, 16 Position, W12X24 ST709619 Front Wheels, W15LX24 ST709610 Front Wheels, TW18X28