HEAVY DUTY SWIVEL REPLACMENT FOR FURNITUREThe bar stool swivel plates are made of solid ring of ball-bearing and heavy steel constructions, high holding capacity and smooth rotating operation, widely adapted for use as a furniture swivel base, such as bar stool , swivel, rocker, recliner chair, table 360 DEGREE SEAT SWIVEL BASE The swivel seat base has 54 solid ball bearings inside with lubricant for smooth movement without unnecessary wandering or rocking; More ball bearings are always better at distributing weight