- This set contains a pair of detailed 4 slot mainwheels with accurate hub detail, subtle tire beading & data. The tyre is block tread style (not Z-Block style). Fitted to postwar Mk VII thru 21 Spitfires operating from improved runways and carrier decks. Also installed on some Seafire XV, XVII, 45 and 46. These wheels are designed to fit the superb Tamiya Spitfire VIII, IX and XVI, but include axle adapter inserts so they can be fit to all other kits. Wheels are 24" diameter (actual diameter .75" or 19mm). Assembly and paint required!