I’ve noticed many teams are using C-Channel cut in half for their lifts this year. I’ve made a bunch of half c-channel part files if anyone wants to use them in their CAD models. Wasn’t hard to do, but I figured this would be convenient 
www.robosource.net calls these “1x1 angle” on their webpage, but they are indeed c-channels cut in half.
Oh wow. Had no idea they sold them already cut like that.