Springfield 1660230BLK 3-Stage Black Anodized Pedestal Set (Includes Square Table Mount and Base), 12-3/4", 20", 28"

12-1/2" square table mount. 12" diameter base with 11" hole pattern for added stability. Nylon clamping bushings with stainless steel hardware. Air-Powered height adjustment, simply release to raise or push down and lock in place. No pumps or power required. Great for boat, RV, deck, and patio.