The AdirPro 12 Pack Flagging Tape is a non-adhesive tape used for surveying, trail marking, and other industrial applications like construction, forestry, hardware, oil exploration, nursery, mining, and geophysics. Solid colors and highly visible. The AdirPro Flagging is the most durable, longest lasting outdoor flagging tape available in the marketplace. Easy identification and easy to use just tie and untie. Available in 5 bright long lasting color options.