If you have a hard floor, as I do, and if you were born with a brain, then use it

, materials are good quality, no rattling, and fits well on carpet or hard floors

If you plan to put these stands on hard floor (and not use the spiked carpet feet provided), I suggest that you attach felt feet of about 1/4 inch.

Would be a 5 star review if it had metal spikes that could thread in and out to help level on uneven floors

I suggest using the plastic spikes on hard floors to eliminate vibrations

so, if you are placing the stand on a hard floor, it would destabilize

I really didn't care for the build quality, They worked well enough however were unstable (wobbly) on a dead flat concrete floor.

If the stands are out of the traffic pattern, which they should be, they will not be bumped, will not move, and hence will not damage a wood floor or other surface, nor will they be knocked over.

The Sanus floor stands improved the sound dramatically.