Flexible Rotation: Ball bearing raceway for smooth rotation. Our swivel bearing features a deeper ball bearing raceway to allow for efficient and smooth ball movement. Available Occasions: Suitable for replacement use on many pallets, bar stools, chairs, boat seats, and ideal for use with rotating shelves in corner cabinets. Material: This swivel plate is made of galvanized steel, surface treated with zinc plating, corrosion-resistant and rust-proof. Swivel plate with enough balls inside, meeting the requirements of swivel plate flexibility. Design Concept: Round groove design for bearings and support, fulfilling the function of weight bearing, reducing the risk of excessive friction, harmless to tables. Overall Size: 72 x 72 x 9 mm / 2.8" x 2.8" x 0.35" (L*W*H). Load Capacity: 60 kg / 150 lbs