The unique barrier head design with spring loaded retractable tape allows for quick set up and easy storage. These stakes are very versatile, leaving you the option of direct ground insertion with the spiked end or using the weighted base for use on hard surfaces. The stake has a telescoping function that extended to 42". Bases can be filled with 18 lbs. of water or 30 lbs. of sand in order to weigh them down. Wall Mount Kit, model WBS-WALL, includes head wall mount, wall receiver, six (6) wood screws, six (6) wall anchors, and four (4) zip ties. Cart Package, model WBS-CART-Y, includes five (5) stakes, five (5) bases and five (5) "caution" reels. Parts sold individually.