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 ST762031 Steel Disk Rear Wheels, 16 Position, W10X48, 203 mm Bolt Circle Diameter ST762041 Steel Disk Front Wheels, 16 Position, W10X36, 275 mm Bolt Circle Diameter ST762103 Front Wheels, 2 Position, Fixed, DW12X24 ST762104 Front Wheels, 2 Position, Fixed, DW12X28 ST709667 Mounting Parts, Front Wheels, MFWD Axle ST709664 Steel Disk Front Wheels, 2 Position, W12X24, 275 mm Bolt Circle Diameter ST709633 Steel Disk Front Wheels, 16 Position, W15LX24 ST709623 Steel Disk Front Wheels, 16 Position, W10X24 PICT-CHC.2 CHC Wheels, Tires and Weights