auto wheel display racks for 18",20",22",24",26" wheels surface treatment:chromed,black 1)Normally our wheel racks have 4 tiers.Every tier can be put two wheels..2)For double row wheel racks,every tire can be put 4 wheels.3)There are two kind surface treatment . One is black lacquer. The other is chromed .4)We have wheel racks for 18",20",22",24",26" wheels. black wheel display racks