Garelick/Eez-In 75080:01 Low-Profile Seat Slide Allows Helm Or Boat Seats To Adjust Fore And Aft Slide Mounts Under Seat In Between Seat And Pedestal Base Convenient Handle Provides Solid Locking At Any Position Compatible With Most 360 Degree Spiders Wobble-Free Design/Operation Allows helm or boat seats to adjust fore and aft Slide mounts under seat in between seat and pedestal base Convenient handle provides solid locking at any position Compatible with most 360 spiders Wobble-Free Design/Operation