I'm guessing also, but I think you are correct.Walker said:Looks like it's for pulling dents (like from a straight on curb hit) out of a rim. With the tire off set the "wings" in the rim and get the yellow hook on the underside (spoke side), centered up on the dent. Then just turn the crank and pull the dent outward. I've never actually seen one of these, so I'm just making this up as I go