Need to keep a piece of furniture with casters from moving around your room? They are great for protecting your floor from dents and scratches, too. The oak is ready for a light sanding and the finish if your choice. Our unfinished oak casters support any caster up to 2" in diameter. The wooded caster cup has a base diameter of 2 1/2" The opening Diameter is 1 5/8" and is it 3/4" high. This item is great for new and vintage furniture such as beds, desks, chairs, sofas and anything else that has a caster 2" or smaller in diameter. Sold individually.