View 1 of Delinx 10-Pack 7" Plastic Propeller Kits for DIY STEM Rubber Band Powered Project

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View 1 of Delinx 10-Pack 7" Plastic Propeller Kits for DIY STEM Rubber Band Powered ProjectView 2 of Delinx 10-Pack 7" Plastic Propeller Kits for DIY STEM Rubber Band Powered Project