Crafted from durable polyethylene and engineered to meet NCHRP-350 specifications, our Delineators are built to withstand adverse weather and traffic impact, making them ideal for construction zones, industrial facilities, parking lots, roadways, and airports. Highly visible Traffic looper tube Delineator post with reflective collars and a 18 lbs. recycled rubber base. Overall height, including post and looper handle, is 47.5 in. post is 4 in. diameter. Extra-large flange is 6.5 in. at the bottom of the post and allows the rubber base to hold the post firmly in place. We recommend using 2 in. Plastic Chain with Delineators. Plastic chain is not included. Color: BLACK REFLECTIVE.