Specially designed for poly tape up to 1-1/2 inches. Fits round and rod posts from 1/4 to 9/16 inches in diameter. Attaches to post with spin-on nut. Accommodates poly wire and poly rope up to 1/2 inch wide. Wires and tape insert easily. Secure, quick-release latches. Tape will float without coming loose. Ultraviolet stabilizers resist weathering. Not for use with high tensile fencing. 25/bag.