Swivel seat mount ?

Swivel Seat Bases - Bling My Rig

Garelick 99023 Standard Series Swivel Seat Mount Top is compatible with any 2.875 (7 cm) diameter tube. It features a 4-prong spider swivel which rotates 360° and locks positively. High tensile aluminum and all stainless steel hardware help prevent corrosion and damage in harsh marine environments.

Garelick 99023 Swivel Spider Seat Mount

The SPRINGFIELD Square Swivel Boat Seat Mount with 0-degree tilt and 360-degree rotation is designed with a universal 4-hole mounting pattern to fit most standard boat seats. The heavy-duty steel construction features an e-coat finish for lasting protection against corrosion. Support your back no matter which direction you face with the smooth swivel that rotates freely on a nylon ring.

Springfield Marine Non-Locking Swivel for Boat SEATS - Four Hole Mounting Pattern - 6.75 inch

Swivel for use with 360 Seats. Includes mounting hardware. 2018 Flint models will require Item #3621 – Flint CH Seat Conversion Kit to be compatible.

NuCanoe Steel Swivel #3065

Type b seat mounts are designed to lock into the post. Engineered to prevent unintentional detachment. Heavy-duty Bushing with peripheral bearing system and exclusive crush ribs are individually sized for exact fit. Tubing is precisely-sized and satin-anodized finished. Tubing comes in several styles. Pedestals come in several lengths including patented j-slot adjustable height. Precisely positioned locking tab positively locks post to base. Wedge Bushing locks in with a tight solid fit.

Attwood Wedge 2 Seat Mount

Wise Fore AFT Seat Slide Pedestal Mount Fits 278 Post 8WD374

Transform your NRS Padded Raft Seat into a swivel seat with the NRS Swivel Plate. Simply attach the plates to your seat and secure the swivel base to your seat bar or Universal Seat Mount for easy rotation. The unit consists of a swivel base that allows the seat to rotate 360 degrees, and two hot-forged aluminum plates that are bolted to it. The two aluminum plates have holes in the 7 x 7.5 bolt pattern for the NRS Low-Back and High-Back Seats.

NRS Swivel and Plates for Padded Raft SEATS

This is a replacement flat swivel zero tilt that goes between the seat and the frame of bar stools. Mounting Adjustable from 6 to 7-3/8 Perfect for passenger seating and front bow fishing seats on marine boat. The 52 ball bearings inside allow for 360 degrees of movement. The opening slotted holes for univeral fit, mounting directly to most standard seats and pedestalsthe Black EDC (Electrostatic Discharge Coating) finish for corrosion resistance.

SeaLux Universal Heavy Duty 360 Degree Seat Swivel Base 6 x 6 Mount Plate for Bar Stool, Chair, Boat or Van Pilot Seat

Easily incorporate shade into your boating lifestyle with the ShadeFin Mini Swivel Seat Mount. Available in a kit, the Swivel Seat Mount is also sold separately. This mount is universally designed to fit most boat swivel seats on the market. Simply remove the boat seat from its pedestal, affix the mount on top of the pedestal where all four screw holes are visible, and then reattach the seat keeping the mount between the seat and the pedestal.

Taco Marine ShadeFin Mini Swivel Seat Mount

Springfield Marine's 1100031-L1 Trac-Lock Pedestal Swivel features locking capabilities and a 2-3/8 in. post mount with a bushing for a close fit. Constructed of high-strength aluminum with a powder coat finish to withstand harsh marine environments. Centrally located locking handle is easy to reach with left or right hand. This swivel rotates up to 360 degrees and adds 3/4 in. of height to a pedestal. Use with any 2-3/8 in. fixed height pedestals.

Springfield Trac-Lock Locking Swivel, 2-3/8

This adjustable Attwood Seat Mount with a swivel action can accept seats with all the most popular mounting hole patterns. This durable, reliable seat mount features aluminum construction with a black powder-coated finish. It adjusts from 7 inches to 18 inches, and is ideal for use in Jon boats. This Seat Mount meets ABYC Code B. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing of the highest quality marine products for over 100 years.

Attwood Clamp-On Boat Seat Swivel