Springfield Marine Trac-Lock III Non-Locking Seat Swivel Seat Slide The Springfield Trac-Lock III Non-Locking Seat Swivel Seat Slide features self-lubricated pads that provide a smooth and easy glide. Made of high strength aluminum with a large 7-14 x 13 platform. The powder coat finish helps prevent corrosion in marine environments. Able to travel 5-14 forward and backward with fingertip control. Offers 360 rotation and fits 2-78 posts. Features Fits 2-78 posts Large 7-14 x 13 platform Powder