These casters are small but quite heavy duty. The wheels and yokes are brass. The stems are short with a rough surface for gripping into the wood. Leg sockets will not work with this set. The caster does swivel around the leg stem.
The stem of each caster measures one inch long and 1/4 inch thick. The height of the caster from the base of the stem to the floor is 1 1/8 inch. Each wheel is 3/4-inch in diameter.
This is a fine set that will hold a lot of weight. Old brass casters are hard to find.