Hard surface floors need protection from chair and stool legs.
...is the best protection.
There are two common ways of applying the felt:
We built a machine to bore a recess in the bottoms of the chair legs to receive heavy duty felt discs:
The felt provides surprisingly little resistance to sliding on rugs or carpet, so we put them on all the chairs. This allows the chairs to be freely used in locations with different floors. If your chairs will always be used on carpet and you wish to have hard plastic glides, please let us know. We have some that fit in the recess.