Flexible Rotation:Ball bearing raceway for smooth rotation Our swivel bearing has a deeper ball raceway to allow balls to move effectively and smoothly Available occasions:Suitable for replacement use on many stools,bar stools,chairs,Boat Seat,suitable for using with revolving shelves in corner cabinets Material:This swivel plate is made from galvanized steel,surface treated with zinc plated,corrosion-resistant and rust-proof Turntable bearings with enough beads inside, meet the demand of turntable in flexibility Design concept:Design of round grooves for bearing and supporting,satisfy the function of weights bearing,decrease the possibility of too much friction,harmless for table Overall Size:72 x 72 x 9mm / 2 8" x 2 8" x 0 35" (L*W*T)Bearing Capacity: 60kg / 150poundsProducts from Chunchuan's store