Panduit DTKEH-0 Dura-Ty Cable Tie Kit Black acetal strap and head material provide 20+ years outdoor life and high impact resistance Excellent ultraviolet light, chemical, and moisture resistance Double stainless steel locking barbs provide consistent and predictable holding values Ideal for securing cables in outdoor messenger strand applications Meets Telcordia TR-TSY-0007899 industry guidelines for lashed cable supports