The Bolt-flanged,6x30 is the lowest priced item on this Accessory(carrier/screen) schematic.
The Accessory(carrier/screen) assembly is constructed from several parts from which the Carrier,f.red is the most expensive.
This schematic depicts all components used in the Kaf620-c6 Mule2500 2000 Europe Accessory(carrier/screen) partslist.