Adjustable Curb Runner enables contractors to accurately place pervious mix adjacent to curbing that can vary from 0 to 12 in. Riser wheels attached to both ends of the screed elevate the system 1/8 in. above the pour. Wheel rings can be added for 3/8- or 5/8-in. elevations, to adjust per contractor specs. Lura Enterprises Inc. 701-281-8989.