This is a pair of 3-1/2" (89mm) 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" Diamond Tread Scale Tires on Gray Nylon Wheels Four 1/8" Adapters Four 5/32" Adapters Four 3/16" Adapters Four 1/4" Adapters rda8/2/06 ir/jxs