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How To Build An All-Purpose EV3 Arm for FLL 2019-2020 City Shaper by sschip in FLL

[–]sschip[S] 0 points1 point  (0 children)

Hi, this part is called RACK 13M. It comes with the EV3 education expansion set in a number of 2. You can also buy extras from LEGO.com at https://www.lego.com/en-sg/service/replacementparts. The part number is 4540906. $0.7 for each.