Brand NEW! Rigidly coupling a loudspeaker enclosure to a floor by means of a "spiking" system dramatically improves clarity, stereo imaging, and bass response. Rigidly coupling a loudspeaker enclosure to a floor by means of a "spiking" system dramatically improves clarity, stereo imaging, and bass response. This is especially apparent with subwoofer systems. These attractive spikes are precision machined from solid brass and then plated with a durable finish. The two-piece threaded tip design allows for precise level adjustment. Barbed insert nuts and 32mm long (M6 x 0.7mm) threaded studs are included for mounting in cabinets with walls up to 1" thick. Set includes four cone spikes, four floor discs, four barbed insert nuts, and four threaded studs. ? Dimensions: 1" diameter, 1-3/16" high (including disc). - All international buyers are responsible for all tax, duties and/or customs fees.