BAR STOOL SWIVEL REPLACEMENT--8" X 1" size dimension, 2.5mm thickness. MOUNTING HOLE DISTANCE--6" (Minmum 147x147mm; Maximum 157x157mm), Hole Size: 8.5*22mm; (Mounting hardware not included). STURDY & WELL-CONSTRUCTIVE--The swiveling barstools made with high quality stainless solid steel ball-bearing construction with black coating finished. 2.5mm thickness, much thicker than regular swivel plate. The heavy duty bar stool swivel replacement can bear load capacity about 220-265 lbs. 360 FREE & SMOOTHLY ROTATION--Using this bar stool swivel plate with 40-50pcs ball bearings swivel much easy and smooth. not easy to deform, have long service life with smooth rotation and low noise. SWIVEL PLATE PERFECT FOR BAR STOOL--This swivel plate are perfect fit for many stools, bar stools,chairs and boat seat,kayak seat,murphy bed, swivel stand, ect. Long-time service life, which difficult to deform and crush with low noise. 8" Swivel Plate Mechanism for Recliner Chair & Bar Stool Square Swivel Furniture Replacement - Ball Bearing