Features: 1.Wide Application: The low profile design makes it versatile and fits most standard marine seats, also can be used in RV, yacht, home. 2.Rustproof Material: High quality stainless steel material, EDC coating, high strength, rust resistance, can be used in marine environment. 3.360 Rotation: Seat swivel mount base is designed with nylon slide runners for silent and smooth 360 rotation, reliable to use. 4.Simple Operation: With 0.3in/0.76cm slotted mounting hole, seat swivel base is easy to install, no complicated tools required. 5.High Quality: Exquisite and careful workmanship, in line with strict quality standards, can be used for a long time. Specification: Item Type: Seat Swivel Base Material: Stainless Steel + Nylon + EDC Coating Size: Approx. 6in/15.24cm Colour: Black Application: RV, Ship, Yacht, Home