Fasmov 7" Heavy Duty Bar Stool Swivel Replacement Seat Swivel Base Bar Stool Swivel Plate,Black 7" Square top & bottom plates 360 continuous rotation Diagonal length 9.7",Flat: 1" thick High quality Solid Steel Great for replacement use on many stools, bar stools, & chairs Hole pattern fits most seats Strong and durable bar stool swivel plate 360 degree rotation on pre-lubricated ball-bearings full round track Great for replacement use on many stools, bar stools, &amp; chairs