for Dusty Strings tuning pins
Star-tip tuning wrenches for use on Dusty Strings harp tuning pins are available with a T-handle or an ergonomic custom handle. The wrench opening is .180" to fit pins with .176" tips. You can also buy just the standard wrench shafts and insert them in your own handles. The shafts have a 1/8" hole for the included roll pin.
for any harp tuning pins
Dusty Strings developed the Universal Harp Tuning Wrench to be fully adjustable in order to accommodate the full range of tuning pin sizes used on antique and modern pedal and lever harps. It can be sized to fit any square-headed tuning pin, regardless of manufacturer.