Square Rotating Turntable - Rotates 360 degrees on lubricated ball bearings. Heavy duty top and bottom to prevent fraying. The rectangular slot will accommodate most square mounting screw hole patterns and brackets for most chairs, bar stools, boat seats, stools, boat seats and table tops. (Mounting screws/kit not included) Commercial Grade Spin Replacement - Handles up to 400 lbs. Pressure sensitive, it prevents endless rotation, which prevents your rotation from wearing out faster. Designed for restaurant-level use.product descriptionBar stool turntable. Designed for new or replacement use. Designed for the restaurant and hospitality industry to handle heavy usage. The perfect replacement for those priceless chairs, stools, bucket seats that have been around for a long time, worn out but with character. These swivel replacements are the best quality for commercial or hobbyist use. NOTE: The bar stool swivel may be difficult to rotate prior to installation. To check the quality, stand on the turntable for an initial spin.great materialThe seat swivel is made of high-quality thickened solid steel plate, smooth black paint treatment, reliable quality and durable. And moisture-proof.perfect performanceAll steel balls, solid thickening, good weighing performance. Not easy to take off, better load-bearing.