- This set contains a pair of detailed 4 slot mainwheels with accurate hub detail, subtle tire beading & data. The tyre is smooth; by far the most common tire seen on Spitfires. For Mk VII thru 21 Spitfires operation from grass or dirt runways. Also fitted to some Seafire kits. These wheels are designed to fit the superb Eduard Spitfire VIII, IX and XVI, but include axle adapter inserts so they can be fit to all other kits. Full 24" diameter (actual diameter .333" or 8.45mm). Assembly and paint required!