Cone Bar, 4'-6' Adjustable ABS Black w/Yellow Engineer Grade Reflective Sheeting is available to buy in increments of 1 Improve safety in your work zone by creating a visual and physical pedestrian barrier with the Retractable Cone Bar and a series of Delineators or Cones from TrafFix Devices. The retractable bar is made of durable ABS plastic, adjustable from 4' to 6½', and wrapped in Yellow/Black reflective sheeting for night-time visibility. Each end of the retractable bar has a rugged 3¼” loop that easily drops over any traffic cones or delineator posts.