Park's popular and versatile Head Wrenches feature their proven "Y" head design and all headset wrench openings are laser cut to ensure a tight, accurate fit. Precise sizing is achieved by high voltage computer controlled laser technology after heat treat. Waiting until the wrench is heat treated eliminates shrinkage and expansion of the steel after the wrench is sized. It takes longer, and costs more, but it's worth the extra effort.

The decreased use of threaded headsets means the Park HCW-15 wrench is no longer a staple for mechanics working on newer bikes. However, it fits a ton of various BB, cassette and other misc shop tools. You will probably find you get much more use out of this tool than expected. One side is a 32mm and the other is a 36mm.