Ball Bearing Swivel Boat Seat Base Turntable, Heavy Duty Sq\. Swivel Mechanism Product Features FULL BEAD SOLID STRUCTURE - The swivel plate bar stools made with high quality stainless solid steel ball-bearing construction with black coating finished. 2mm thickened solid steel, much thicker than regular swivel plate.The turntable can bear load capacity about 132-176 lbs. 360 FREE ROTATION - 360 degree rotation on pre-lubricated ball-bearings full round track, this bar stool swivel plate with 40-50pcs ball bearings swivel much easy and smooth with low noise. Not easy to deform or crush, have long service life with smooth rotation and low noise. MULTIPURPOSE - This swivel plate are perfect fit for many stools, such as swivel chairs, bar stools, bar chair, boat seat, kayak seat, murphy bed, swivel stand, sofa, rotating brackets, display cabinets, display stand, TV stand, wooden turntable, station assembly line rotation, gift box etc. MEASUREMENT - 6.25" X 1" size dimension, 2.5mm thickness. Mounting hole distance:4.9" (Minmum 120x120mm; Maximum 130x130mm)). Hole Size: 7x21mm; (Mounting hardware not included). Load capacity:The front and back are integrally fastened with each other, which has good bearing performance, can load 60-80kg. Customer Services - Please feel free reach out to us if there is any question with our product, we will provide after-sale services for all our products. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!