These are the wheels that were included with the T1, and a similar type with later versions of the T1 cars, and T2, right up until Xray opted to use the smaller boxes leaving no room for them in the packaging. The early 305940 Starburst wheel. The later hard version is still available as the 803001.
I have these regular ones that have yellowed over time, and I intend to bleach them as soon as I get a bright sunny day.
