Description KT cable ties are made from strong DuPont 6/6 nylon material. This material yields a higher break points even at colder temperatures then the competition. Packaged in resealable bags to help preserve moisture and keeps ties organized. Higher moisture gives most zip ties more tensile strength. UL listed. U/V ties can be used outdoors and indoors. Length is approximate.Specifications:4" bundle diameterFor indoor use only-40ÂF - 185ÂF75lbs break strength