The Young Engineers Support Program (Y.E.S.) says
“If you are a student or individual involved with an engineering project or robotics competition who would like request products, please fill out the Student Sample Request Form.
Please note that the Y.E.S. Program is not limited to students, but also welcomes requests from all individuals or organizations competing in robotic and autonomous vehicle competitions.”
It is sponsored by Igus, a manufacture of plastic bearings and other parts related to robotics.