Springfield 1100521-1 Non-Locking 2-7/8" Trac-Lock Slide and Swivel is constructed of high-strength aluminum. The swivel rotates a full 360¡ and adds 1-1/4" to the height of the pedestal. The slide features a large 7-1/4" x 13" seat mounting platform that travels 5-1/4" forward and backward on self-lubricating pads. Designed for use with 2-7/8" fixed height pedestals. 5-year warranty.