1 set (6pcs) Guitar bridge pins size 1 Ebony with Paua dot Tapered shaft string slot running the full length of shaft. Diameter at top of shaft 5.3mm (0.21") length of shaft 22.9mm (0.9") . Will fit the following models - Martin guitars prior to 1994 (except HD-28), Collings guitars, prior to 2002, Blanchard, Garrison, Goodall, Ryan, Santa Cruz, Taylor, Larrivee D-03R and others.