one for each direction and a "soft" detent drive pin to lock it to either direction..... I like a hand wheel idea better than a handle for me...sometimes my hands are faster than my brain... I guess kinda like some of the draw bars have.Ive seen a big one behind the chuck on somebodys setup. I do like the looks of yours, and a one way bearing means you can crank it like a ratchet and not have to go all the way around with handle.. last year I was looking at the one way bearings so I could put one on my 4 wheeler on the rear solid axle so I didnt tear up the lawn hauling my yard trailer...but never got past the thinking stage.