What’s this part called

[jdl71]

This really isn’t 60-66 specific I guess, but I’m either drawing a blank or may not have ever known what this part is called. On a 3 speed manual it attaches to the tube (for lack of a better word) that sticks out of the trans to change gears. It’s round and splined on one end and has a bolt to clamp it on, the other end is what the shift rod is attached to. I can picture it but for the life of me can’t figure out what to call it. Not even truck specific I guess, I’ve seen them on rototillers and other stuff to shift gears. I need to look for one and having a name would be a good start. Thanks