Like the old Vega armrests. Nickel plated brass, fits most 11" rim banjos. Attaches between banjo bracket hooks and tension hoop. Hooks fit through 2 oval slots in the side of the armrest. Slots are approximately 5/8" wide and spaced about 3 3/8" apart to accommodate most bracket hook spacings. There is no special attachment hardware for this armrest. Also, while not ideal, this armrest will work on most 12" diameter rim banjos. Does not fit the Deering Goodtime banjo (see GT102).