The park hxs12 professional hex wrench set shop quality l shaped hex wrenches have a genuine bondhusreg balldriver tip on the long arm excluding 8 and 10 mm for hard to reach bolt heads and a straight tip on the short arm for high torque applications these park tool wrench tips are precision chamfered for a clean tight fit special speed bearing attachment facilitates installation and removal of long threaded bolts wrenches are made from industrial quality bondhus protaniumt high to