Park tool 3 way hexagonal ball end wrench aws8park tool introduced the bicycle industry to the 3 way hex wrench set more than 20 years ago their latest versions are stronger and more comfortable than ever they fit perfectly in the palm of the hand and provide tremendous leverage hexes are made from bondhus protanium high torque industrial steel and are heat treated for long life tips of hexes are chamfered for a perfect fit features4mm 5mm and 6mm hex set wrenches made from industrial t