These attractive spikes are precision machined from solid brass and then plated with a durable finish. Barbed insert nuts and 6 mm threaded studs are included for mounting in cabinets with walls up to 25mm thick. Set includes four cone spikes, four floor discs, four barbed insert nuts, and four threaded studs. Insert nut requires a 5/16″ hole to be drilled in cabinet prior to installation. Dimensions: 21mm diameter, 24mm high (including disc).