4 x 1-3/8 inch sintered iron (semi-steel) wheel
2-1/2 x 1 inch sintered iron (semi-steel) wheel
3 x 1-3/16 inch sintered iron (semi-steel) wheel
2 x 15/16 inch sintered iron (semi-steel) wheel
4 x 1-1/2 Lava wheel 3/4 RB
4 x 1-1/2 Lava wheel 1-3/16 plain bore
4 x 1-1/2 High-temp phenolic wheel 3/4 RB
4 x 1-1/2 High-temp phenolic wheel 1-3/16 plain bore