Garelick 75082:01 Standard Series Seat Slide and Swivel - 6" Travel Compatible with any 2-7/8" (7cm) diameter tube Convenient handles provide solid locking at any position Anodized aluminum for added protection from saltwater corrosion and weathering Includes retaining hardware (99300) to prevent inadvertent detachment 6" (15cm) Fore and Aft Travel 8.5" W x 8" L (22cm x 20cm) Provides smooth fore and aft travel and 360 seat rotation Adds comfort and stability for any swivel boat seat Mounts underneath seat and on top of pedestal stanchion Compatible with any 2 7/8"(7cm) diameter tube Convenient handles provide solid locking at any position