Hellermann Tyton T255S0HIRX2 Heavy Duty Cable Tie, 8.9" Long, 250 lb Tensile Strength, PA66HIRHSUV, Black (Pack of 25) High impact, heat and UV stabilized heavy duty cable ties contain an impact modifier allowing greater flexibility and greater resistance to vibration. Head design provides high tensile strength with very low insertion force. Bent tail ensures a quick and simple installation.