Features: Isolate the speaker vibrations from speaker to the floor better,best on hard flooring. Rubber has high elasticity, aging resistance, corrosion resistance.Regardless of the level of speakers keeping them relatively immobile is a good thing for the tightness of the bass response. Made of synthetic rubber material.Think size makes it ripping off hardly. It is easy to use,just pulling the drivers from the speakers to drill the holes and place the t-nuts. Suitable for HiFi speaker, amplifier, subwoofer. Specification: Material : Rubber Rubber Diameter (Little End) : 37mm / 1.45" Rubber Diameter (Big End) :38mm / 1.45" Small Hole Diameter:6.5mm/0.26" Big Hole Diameter:19mm/0.74" Height : 19mm /0.74" Package Content:4 x Rubber Feet
