Loudspeaker spike MERCUR 4 pieces Special spike for all components of a system. Ideal for retrofitting adapted from CD players, amplifiers and power amplifiers. In particularly turntables benefit from this type of coupling. The model consists of a high-quality self-adhesive Super Spike and an ABS-foot (6), whereby the Super Spike looks almost like a normal foot for electronic devices. This allows the hi-fi system to move without damaging the surface.