This is a Pair of 3 1/2" Scale Wheels from Robart.FEATURES: Scale Replica Aircraft 32X8 Goodyear All-Weather Tires from WWII. Three Different Hubs Styles: 8-Spoke(P-51), Smooth(P-40) & Open Wheel Adapters for Different Sizes of Strut Wire: 1/8", 5/32", 3/16" & 1/4"INCLUDES: Two 3 1/2" Smooth Ribbed Tread Scale Tires on Gray Nylon Wheels Four 1/8" Adapters Four 5/32" Adapters Four 3/16" Adapters Four 1/4" AdaptersRobartPart ROB116