The caster wheels sit in the felt pads but not snug so when you move/roll the chairs they come right off. The caster wheel comes off when the chair is rolled.
Adhesion is great and protects my hardwood floors from scratches and scuffs. Works very well on a roomba vacuum robot to protect furniture from bumps and scratches. Not only prevent scratching, it also quiets the rocking action.
Worked great. Cleaned and sanded before install. Solved the problem nicely.
The cardboard roll inside the felt was destroyed. The felt was pinched and crushed. Only received one roll.