101 will fit: these 12th scale cars; Associated, IRS, CRC, CEFX, Speedmerchant, and these WGT Cars; Asc 10R5, Speedmerchant Formula 10.

will fit: these 12th scale cars; Associated, IRS, CRC, CEFX, Speedmerchant, and these WGT Cars; Asc 10R5, Speedmerchant Formula 10. 12R5.2 & GenXLE with 3/32” balls, GenXLE & GenXTI with 3/32” balls

will fit: these 12th scale cars; Associated, IRS, CRC, CEFX, Speedmerchant, and these WGT Cars; Asc 10R5, Speedmerchant Formula 10. 12R5.2 & GenXLE with 3/32” balls, GenXLE & GenXTI with 3/32” balls