Springfield 12-Way Locking Seat Swivel 6-7/8" S/S 1100019 by Springfield Marine $75.86 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Springfield 12-Way Locking Boat Seat Swivel 6-7/8" Stainless Steel #169-1100019 Driver Rated Swivel: 4-hole pattern. Height 1-1/8". PPG coated.