Several of us are away at the Somerset Folk Harp Festival, and we may not be able to respond to emails and phone calls as quickly as usual. Thank you for your patience!
These star-tipped wrench shafts are sized to fit Dusty Strings threaded harp tuning pins and can be inserted in your own handles. We use them in our Standard Harp Tuning Wrenches. The opening is .180", and each shaft has a 1/8" hole for the included roll pin.