Our 100% recycled plastic parking blocks help keep traffic in place. They're lightweight, but durable, with color throughout the block. Available in a choice of parking colors, Pawling's parking blocks are installed with lag bolts (into concrete) or spiked (into asphalt). Galvanized Truss plates are also available for adhesive installation into concrete. Weight: 25 lbs each Length: 70" Colors: Safety Yellow, Handicap Blue, White, Black or Gray