Harp Bridge Pins, Pack of 6. (Item Code: HPNB) These bridge pins are meant to fit the Pixie Harp (TM), Heather Harp (TM), and Minstrel Harp (TM). They are approximately 1.25 inches long, with a 5/32" diameter (37mm L x 4mm D). The one end has a groove that holds the string. These pins are hand made so expect some variation in size.