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Non-VEX IQ components. Robots are allowed to use the following additional “non-VEX IQ” components: Rubber bands that are identical in length and thickness to those included in the VEX IQ product line (#32, #64, #117B & #170). ⅛” metal shafts from the VEX V5 product line. Significant Q&As: 2087 - There is no legal replacement for the VEX IQ 2x20 square silicone band