you will want that tool as sometimes it will drive the stud into the drum instead of removing the outer nut. then you wind up with both wheels off but joined together with the inner and outer nuts which is a bear to deal with, not much fun even with the correct tool. there is a special square socket for the inner nut. The special tool for problems is a q shaped short wrench which slips over the offending nut and has a lug that catches on the center hole to hold the outer nut still while you drive the inner nut down thru. if you do drive the stud into the drum usually gentle probing with a slender magnet will draw it back out without having to remove the drum.
