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 ST762045 Steel Disk Front Wheels, 16 Position, W10X32, 275 mm Bolt Circle Diameter ST762103 Front Wheels, 2 Position, Fixed, DW12X24 ST762105 Front Wheels, 2 Position, Fixed, DW15X24 ST709659 Steel Disk Front Wheels, 2 Position, W15LX24, 275 mm Bolt Circle Diameter ST709311 Steel Disk Rear Wheels, 16 Position, DW12X38, 203 mm Bolt Circle Diameter ST708329 Steel Disk Rear Wheels, 2 Position, DW15LX38, 203 mm Bolt Circle Diameter ST708191 Mounting Parts, Rear Wheels, Flange Axle PICT-CHC.2 CHC Wheels, Tires and Weights