- FULL BEAD SOLID STRUCTURE: Crafted from high-quality stainless steel, this swivel plate bar stool features a solid steel ball-bearing construction with a durable black coating finish. At 2.5mm thick, it is significantly sturdier than standard swivel plates, supporting a load capacity of 176-220 lbs. - 360 FREE ROTATION: Enjoy effortless 360-degree rotation thanks to the pre-lubricated ball bearings within a full round track. With 40-50 ball bearings, this swivel plate ensures smooth and quiet operation. Designed for durability, it resists deformation and provides a long service life. - MULTIPURPOSE COMPATIBILITY: This swivel plate is ideal for a variety of applications, including swivel chairs, bar stools, boat seats, kayak seats, Murphy beds, rotating displays, TV stands, and more. Its versatility makes it a valuable addition to your home or workspace. - MEASUREMENTS: Each swivel plate measures 7 inches square for both the top and bottom plates and stands 1 inch high, with a thickness of 2.5mm. The mounting hole distance is 5.59 inches (minimum 137x137mm; maximum 147x147mm), and the hole size is 7x22mm. Note: Mounting hardware is not included. - STRONG BEARING CAPACITY: The front and back plates are securely integrated, providing excellent bearing performance with a load capacity of 80-100 kg, ensuring stability and reliability for all your seating needs.