The popular and versatile head wrenches feature the proven ldquoyrdquo 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 itrsquos worth the extra effort park hcw 15 3236mm headset wrench features