Whether it is highway panel replacements, whitetopping, or airfields, the RS 844 roller screed is a cost-effective tool designed to be the best value for the contractor. This ride-on steerable screed is powered by a 44 hp Kubota turbo diesel engine making it the most powerful on the market. The 8-in. diameter paving tube is available in widths of 14 to 34 ft. Allen Engineering Corp. 800-643-0095.  www.alleneng.com [WOC Booth O31441]