12pcs/1dz. finishing "Tea Cup" washers, steel/chrome, (set = 12 pieces) for early 60s vintage Fender amp back-panel screws
typically used with blonde and brown tolex Fender amps 1960-1964 and the early black Tolex Fender amps and cabinets till 1965
matching with Back-Panel screws: HR3030 and HR3035