These just stick on the bottom and gripped my laminate floor like a champ. We have hardwood floors and our modular couch would slide all the time with our dogs jumping on and off.
Did it with a box cutter and worked great. Adhesive is very strong and holds well. Easy to cut to size and very sticky and secure.
These leave a yellow mark on hardwood floors. Simply rub it off with a pink school eraser. They work somewhat; the mat definitely slips less, but it still slips.
Very sturdy. Replaced on all my dining chairs. Overall good, not great.
Be sure to drill a small hole with a diameter smaller than the nail first to avoid splitting the wood leg. I typically just add a round felt sticky pad to make the chairs quieter.
Box only contains 39. Thin gauge nails result in bending when hammered into chair legs. Also the nail has a tendency to break off from the plastic backing. Broken x-protector after trying to simply hammer it into the bottom of a chair leg.