TrafFix CR4324B Alert Rumble Strip, Black. Made of 100% Vulcanized recycled rubber. Adheres to the roadway at all times, in all conditions and at all speeds. Assembles quickly with one person. Pliable rubber and jigsaw connection connectors provide easy installation. Bi-Directional ramp eliminates required orientation of the strip on the roadway. Large handle accommodates gloved hand for a balanced carry & drop. Each strip is 46.5" long × 12" wide × 1" height. Three strips will accommodate a 12 wide lane. Easily stacks. Each strip weighs no more than 24 lbs while a complete set of three (3) strips will not exceed 72 lbs. TrafFix Alert Rumble Strip Applications: Emergency Traffic Control, Flagger Operations, Pilot Car Operations, Road & Highway Maintenance Projects, Temporary Checkpoints and Temporary Lane Closures, Lot of 1