BAR STOOL SWIVEL REPLACEMENT--10" X 1" size dimension,3.0mm thickness. MOUNTING HOLE DISTANCE--7.87" (Minmum 195x195mm; Maximum 205x205mm), Hole Size: 8.5*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. 3.0mm thickness, much thicker than regular swivel plate. The heavy duty bar stool swivel replacement can bear load capacity about 265-331 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. Measure Your Mounting Hole Distance please before make the purchase ! Please Measure Your Mounting Hole Distance carefully to see if match our dimension drawing photo or not, in case of wrong size. All returns are based on compatibility (incorrect size, careless selection) Wrong size selection will waste your time one week at least, and will waste my money 10usd if return; 10" (245mm) Square Swivel Replacement for Recliner Chair or Furniture - Ball Bearing Swivel Plate Mechanism - Flat Measure Your Mounting Hole Distance please before make the purchase !