I used to use the standard tool that came with my Riedells, but the center part for the wheel nuts wouldn't reach far enough into some of the wheels I have. This one is perfect and more comfortable to use.

For the longest time I just had the stock Riedell stock skate tool, which got me by, but eventually started to warp as I got in the habit of loaning it to other skaters/refs. This thing is tough, easy to grip, and inexpensive.