Air Powered 3-Stage Pedestal Set - 12 3/4in., 20in., and 28in. - Anodized

12-1/2in. square table mount. 12in. diameter base with 11in. 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.