An exclusive locking device ensures reliability. The stainless steel tongue is permanently molded into the nylon head and provides a superior locking of band in all temperatures and in all environments. The strap is infinitely adjustable to any diameter within its length and can therefore always be tightened exactly as much as needed. The self-locking TY-RAP straps are characterized by a smooth and soft design with rounded edges and uniform profile. They have no nicks or notches that can cause breakage in the band in cold or dry conditions. Cable tie material: Polyamide 6 Material locking tongue: Stainless steel 316. Temperature range: -40ºC to +85ºC Flammability class: UL 94 V-2 Other features: Halogen-free, UV-resistant (black) Colour: natural or weatherproof black by default.