DEWALT DWS5100 12-Inch Dual-Port Folding Rip Guide 12-inch Ripping Capacity on Left Side for common rips such as stair treads and risers Up to 14 1/2-inch Ripping Capacity on Right Side for maximum width rip cuts Lightweight and durable aluminum construction for portability and strength Folds down to 19-inch long by 3-inch wide for easy storage Permanently laser-etched markings for accurate and fast setting;