360 Degree Rotating: RV swivel base enhance driving experience, allowing for a smooth 360-degree rotation to easily adjust your seating positionSturdy Iron Construction: RV Swivel Seat Base is crafted from sturdy iron, this swivel base ensures long last durability and reliable performance for everyday useEasy to install: The rotating base is easy to install, designed with accurate holes positions, can be screwed or welded, we recommend you ask professional engineers' help to ensure good experienceFor Seat Modification: By rotating the seat base, the seat will be adjustable seat, providing a more comfortable and convenient seating and driving experienceWide Application: strong load bearing RV seat conversion turntable base fits for most RVs, trucks, boats, van, engineering vehicles, large buses Specification: Material: Iron Size Chart: Total Size: 39cmx36cm/15.35inchx14.17inch Package Includes: 1Swivel Seat Mounting Plate Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.