To answer your question, I would need to see what this thing is on ebay. "H" joint is not a familiar term to me. But I would beware of it because the drive shaft end has a cast steel that does more than hold a u joint. It continues past and has a machined stud on it that inserts into the other side which also is cast and goes past the u joint it holds. So I need to see this adapter to really pass judgement.