Answered: Rubber Grommets

is the use of Rubber grommets like these legal?

I was thinking of drilling some holes in some metal and then putting the grommets in so I could feed wires through the holes and not risk the wires being cut by the metal

Please be sure to read the Q&A Usage Guidelines before posting. Specifically items 1 & 3, regarding reading the manual and quoting applicable rules.

Since the part you mentioned is not an official VEX part, nor a identical replacement to an official VEX part, it is thereby illegal.