Our Construction Barrel & Traffic Barrels have a tapered design to allow for stacking and storage - with or without lights installed. Manufactured from tough, reboundable plastic with a integrated lifting/dragging handle. This construction barrel is also available in a "low density" softer version. Whether it's our Standard Base, our proven San-Fil Base our Road Rubber, 25 pound or 40 pound solid rubber base, channelizer drums are effective in directing, or "channelizing", traffic along paths (or channels), whether on the road or within an indoor industrial setting. This channelizer drum (also known as traffic barrels) presents a large, highly visible object that help divert traffic flows in any way desired.