Modeling HO Scale streets is a quick and easy job with Walthers Cornerstone Street System kits. This complete system of detailed plastic parts installs like sectional track; simply glue sections together and add sidewalks, curbs and other details. Street surface is easily painted and weathered to fit your era. Complete Sets (933-3138 Concrete, 933-3139 Brick and 933-3194 Asphalt) include approximately 25" 63cm of roadway, along with parts for one complete intersection, sidewalks, curbs, driveway and alley entrances, plus complete instructions. Additional Cornerstone HO Scale Street System. straight sections (933-3155 Concrete, 933-3156 Brick and 933-3195 Asphalt) are available separately to expand your highway system, each set includes eight straight sections.