100Pcs Black Zip Ties, 12 Inch Premium Nylon Zip Ties Heavy Duty with 48 Pounds Tensile Strength, Self-Locking Multi-Purpose Cable Ties, Wire Ties Suitable for Indoor and Outdoor Nylon; Plastic PACKAGE INCLUDED: Each pack contains 100 premium zip ties heavy duty 12". STRONG AND DURABLE: Made from premium nylon with a tensile strength of 48 pounds, our nylon cable ties are strong yet flexible. The tie has good toughness and high temperature resistance, and can be used in the temperature range of -4?~175?. SELF-LOCKING: The self-locking design on the zip ties adopts a humanized non-return design. Thread the tie through the tooth slot until it reaches the locked position and tighten. The self-locking design will firmly clamp and fix the object, effectively preventing the object from falling off. EASY TO USE: The black zip tie is very simple to use, no tools required, just loop the tie around the object and pull the tie through the slot to tighten it. The self-locking design cannot be automatically unlocked, and only requires a pair of diagonal pliers to cut the cable tie when disassembling. WIDE APPLICATION: Our wire ties are the perfect choice for many indoor and outdoor projects, they can be used in the home, office for organizing and bundling cables or wires, and in gardens, garages to repair fences, hang heavy objects, secure objects and many more.