Lightweight aluminum construction allows for easy transport to and from the jobsite. Universal design works with all brands of miter saws. Legs provide superior support and fold for easy storage 5-1/2' beam extends to support up to 16' of material and up to 500 lb (pound). Work stops/supports can be repositioned quickly anywhere along the rail. Nonmarring feet on tool mount won't scratch material. 500 Lb. (pound) weight capacity. 150" W x 32" H when fully extended, 72" W x 6" H when folded. Includes: 2 convertible work supports/stops and 2 mounting brackets.