BAR STOOL SWIVEL REPLACEMENT--6.25" X 1" size dimension, 2.0mm thickness. MOUNTING HOLE DISTANCE--4.9" (Minmum 120x120mm; Maximum 130x130mm), Hole Size: 7*21mm(Mounting hardware not included). STURDY & WELL-CONSTRUCTIVE--The swiveling barstools made with high quality stainless solid steel ball-bearing construction with black coating finished. 2.0mm thickness, much thicker than regular swivel plate. 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. 6.25" Replacement Bar Stool Swivel Plate 360 degree continuous rotation with 47pcs 8mm ball bearings