These are James Duff 4° C bushings. They are used, but like new. I had them on my 78 for maybe a couple of weeks before I had them swapped out for 7° bushings since I ended up with more lift than I had anticipated, which is why I had the 4's the begin with. They've just been sitting in a box and I don't plan on going back to 4's.

They currently retail for $65 from James Duff. I'm asking $30+shipping.