42" in height Made of flexible low density polyethylene 6 Kg (13 lbs) Octogonal Rubber base UV inhibitors to minimize fading Meets Federal MUTCD standards The recessed areas on the stem protect the reflective bands, minimizing rips and scratches. The extra large flange at the bottom of the stem allows the rubber base to hold it firmly in place. They come in a height of 42" and are ballasted by 13 lb. Recycled Rubber Bases. Simply drop the Recycled Rubber Base over the tube stem and you're ready to go to work. Rubber Bases: The composite construction offers strength and durability. Bases come in 6 Kg (13 pound). Bases are designed with easy grip handles, and stacking rings for easy storage and transportation.