1 set (6pcs) Guitar bridge pins size 1Buffalo horn with abalone 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.