5/8", 3/4", 7/8", and 1" felt washers designed for placement between control knobs and antique radio cabinets. Each washer features a 1/4" center hole to accommodate standard radio control shafts. These felt spacers buffer the knob against the cabinet surface to prevent scratches, finish wear, and mechanical friction during operation. Available in individual packages of 4 washers per size. Manufactured to fit vintage radio models requiring standard control shaft spacing and protective felt padding.