In the past the Legal Parts Appendix has included: Rubber Band #117B (228-2500-470), but no mention in Game Manual. Is# 117B legal?
Rubber Band #117B
R8b reads as follows:
<R8>b: Rubber bands that are identical in length and thickness to those included in the VEX IQ product line (#32 & #64).
(in the future, please remember to include the applicable rule in your question)
Per R8b, #32 and #64 rubber bands are the only legal sizes. VEX IQ rubber bands can be found on the VEX website, here: https://www.vexrobotics.com/rubber-bands.html