Thumbnail Filmstrip of Tuning Wrench for Harp Pins Images
Use this wrench for the tuning pins on most folk harp, lever harp, and celtic harps. Works for both threaded and tapered harp pins.
If you are unsure, you can measure the head of your tuning pin. Use a digital caliper and measure the width across the top of the head. This wrench will work if the the measurement is between .176" and .185"