Xinkunmarine 360° Swivel Boat Seat Mount Base, Adjustable 7.5-18" Clamp On Heavy Duty Steel, for Jon Fishing Bass Kayak Skiff Boat

TOOL-FREE & DUAL INSTALLATION：Easy clamp-on design requires no tools for fast setup. You can also secure with screws for extra stability, perfect for quick installation and reliable use.. 360° SWIVEL & ADJUSTABLE SIZE：Smooth 360° rotating swivel for better fishing and boating visibility. Adjustable from 7.5 to 18 inches, fits most standard boat seat mounting patterns.. HEAVY DUTY & CORROSION RESISTANT：Made of strong galvanized steel with black powder coating, rustproof and durable for harsh marine environments.. SECURE ANTI-SLIP CLAMP DESIGN：Inward-angle clamp grips tightly to prevent slipping, stable and safe on the water in rough conditions.. UNIVERSAL COMPATIBILITY & SAFETY NOTE：Fits Jon boats, fishing boats, bass boats, kayaks, skiffs and boats with bench seats. Please fully tighten wing nuts before use for safety.