This listing is for 2 x seat swivel clamp-on mount bases
Adjustable boat seat clamp complete with 175mm seat swivel fitted
Low profile design - Suits most standard marine seats
Allows quick and easy removal or re-positioning
The clamps have a non-slip coating over the black plated frames
Heavy duty grey reinforced plastic mounts
Chrome-plated wing nuts, nuts & washes on clamp allow quick adjustment
Suits bench seat widths from 215mm up to 500mm (maximum)
Swivels have nylon slide runners for silent, smooth 360° rotation
Swivel suits standard 175mm (7") mount pattern
8mm slotted mount holes for universal fit
Note: Swivel will be very tight initially and hard to turn, but once you mount your boat seat to it and clamp it onto your bench seat, the weight of the user will allow it to swivel more freely