Parts list: № Number Qty Name Options 1 AL156778 1 Extension (Bolt Circle Diameter = 275 mm) Next page: ST728245 Attachment, Hub Extension, 44 mm, Rear, Tread Adjustment ST709667 Mounting Parts, Front Wheels, MFWD Axle ST709337 Steel Disk Rear Wheels, Adjustable, 16 Position, TW18LX34 ST709655 Steel Disk Front Wheels, 2 Position, W15LX28, 275 mm Bolt Circle Diameter ST806198 Steel Disk Rear Wheels, 16 Position, W12X48, 203 mm Bolt Circle Diameter ST709890 Attachment, Additional Rear Wheel Weights, 110 kg (242.5 lb) ST777425 Front Wheels, Adjustable, 16 Position, W12X28, 3 Piece MFWD Axle (Narrow) ST864984 Rear Wheel Reinforcement Plate, OD 475 mm ST864955 Attachment, Rear Wheel Reinforcement Plate, OD 475 mm ST861090 Rear Wheel Weights, 2 Weights, Outside Rear Wheel, 100 kg (220 lb) / 250 kg (551 lb)