Review on SoftTouch 4291195N Furniture Caster Cups: Round, 4 Inch Gray Cups with Carpeted Bottom - Ideal for Protecting Hard Floors by Javein Harvey

I have a few pieces of furniture with metal legs and when I replaced the floors I knew the new ones would never survive those legs. I bought and used these casters and the floor around this furniture is still in good condition. (Floors have generally suffered over 11 years of use, but metal furniture legs have done no more damage over time than simple use.) And they continue to function even if/when dented and heavily used. Sometimes I took them out to vacuum the bottom and top (lots of dog hair here), but you may or may not do that. If you're worried, buy them. Allows you to protect your floors at a very affordable price.