Dynavox sub Watts Absorber 4er Set Brass Noise Killer Decoupler Spikes HD-919

No vibrations: The absorbers effectively suppress the spread of low-frequency vibrations, resonances and feedback, no more annoying roar. Height adjustable: the spikes are adjustable in height - so your devices or speakers can be precisely adjusted and aligned to the listening position. Easy to install: with the included adhesive strips, the spikes can be attached directly to the speakers or devices - without drilling or screwing. High load capacity: the spikes can also be easily mounted under heavy equipment/boxes - the maximum load capacity is 21.5 kg per foot. Box contents: 1 x set of 4 Dynavox absorber spikes including adhesive strips and washers in blister packaging.