Allen’s RS800 Series roller screeds are designed for highway panel replacements, white topping or airfields. The RS844 is the first in the new series of spinning tube pavers, a ride-on steerable roller screed powered by a 44-horsepower Kubota turbo diesel engine. The 8-inch-diameter paving tube provides 25 percent more surface contact to the concrete screeds than other roller screeds, providing for a smoother concrete pavement, according to the company. The RS844 is available in widths of 14 to 34 feet, with working widths of 12 to 32 feet. Drive tube and paving tube scrapers eliminate concrete buildup on tubes.