Universal joint
this is the one used on the current rocket but it cant be sourced anymore
https://us.misumi-ec.com/vona2/detail/221000849938/?HissuCode=R-4-A-A
this is the one used on the current rocket but it cant be sourced anymore
https://us.misumi-ec.com/vona2/detail/221000849938/?HissuCode=R-4-A-A