CH Hanson 15217 21-Inch Marking Flags, Glo Orange, 100-Pack Oversized flag for added visibility in dark or crowded areas High visibility, Glo orange color is quickly and easily recognized by those passing Made with high quality material for added durability in rough conditions Perfect for marking communication, alarm or signal Lines, and cables or conduit just to name a few Includes 100 Flags per bundle, making it easy to mark in a medium to large area