Ringtop delineators feature an easy to grab looped handle at the top for carrying and/or roping off an area; ideal for temporary lane delineation. The loop handle includes a reinforced 1/2" hole for mounting a warning light and knob for securing caution tape. Ringtop TD5100 posts are constructed of Post-Consumer Recycled high impact polyethylene utilizing polymer protection UV stabilizer Bases are constructed of 100% recycled rubber. Tested and certified to meet the crashworthy requirements of NCHRP-350