Ebony, small, silver colored height adjustment wheels, base arched to fit older Gibson mandolas with a minimum of carving, stamped "PAT'D JAN 18-21" on one side. Precisely crafted for excellent intonation - compensation is designed for mandola strings. NOTE - Now with a larger base. (It used to have the same base as the mandolin bridge.) The bridge base is now 4 7/8" in length and 1/2" wide, with the saddle adjuster holes being 2 1/4" apart on the centers. Made by Randy Wood.