Feature 1360 DEGREES ROTATE: Allows for 0 to 360 degree rotation in either direction, making it easy to convert existing fixed seats into swivel seats, providing convenience for passengers to adjust seat orientation for boarding, exiting, or interacting with other occupants. 2STURDY CONSTRUCTION: Seat base made of stainless steel, carbon steel, and hot rolled steel for durability and longevity. Black oil paint coating on the appearance effectively prevents oxidation and wear, ensuring the swivel base remains intact even after prolonged use. 3SECURE AND STABLE: The heavy duty seat base is designed to securely fasten the seat during vehicle operations, ensuring the safety and comfort of passengers, allowing for a dependable driving experience without compromising on . 4STRONG COMPATIBILITY: Designed with versatility in mind, the swivel chair base is suitable for a wide range of vehicles, including RVs, and trucks. Its unique design makes it an excellent choice for various seat modification projects, enabling a seamless upgrade to any large vehicle. 5INSTALLATION GUIDE: Requires marking and drilling holes, securing the base in place, and mounting the seat onto the base. Professional installation is recommended to ensure a precise fit and safe installation process.Item Type: Swivel Car Seat BaseMaterial: Stainless steel + carbon steel + hot rolled steelRotation Angle: 0-360 degrees, forward or reverseBase Dimensions: Approx. 390x360mm / 15.35x14.17inSeat Mounting Hole Distances: 230mm, 260mm, 297mm, 304mm (or re drilled)Application: Unique swivel base for seat modification, convert fixed seats to swivel seatsInstallation: For seats too large, additional transition plate is needed for installation, for seats too small, re drilling is required. Installation of this base is dependent on your seat size.Fitment: for most RV, commercial vehicle, and engineering vehicle seats modificationInstallation Instructions:1. Identify the seat base installation location and clean the appearance2. Mark the drilling locations, drill holes using the drilling tool3. Secure the seat base in installation position and fasten with screws4. Mount the seat securely on the base for complete installation(Installation is somewhat challenging, it's highly recommended to seek professional engineers for assistance to ensure an excellent shopping experience, safety precautions should be taken during installation) Package List1 xSwivelCarSeatBaseNote1. Prior to installation, please familiarize yourself with the product as the installation process can be challenging. It is highly recommended to seek assistance from a professional engineer to ensure an excellent shopping experience. 2. The turntable is a general product, please check the size before purchasing. If the seat is too large, a transition board may need to be added for installation, and if the seat is too small, new holes may need to be drilled. Therefore, the installation of the base depends on the size of your seat. 3. Please pay attention to safety during the installation process.