High-strength aluminum, large 7-1/4" ? 13" platform. Travels 6" forward and backward on self-lubricating pads. Rotates 360degrees . Automatically locks in forward position. Dual function activator handle operates slide as well as swivel. Handle telescopes up to 3". Adds 1-1/2" to height of pedestal. Fits all 2 7/8" pedestals.