?Guarantee? : All our products come with a Lifetime warranty. Hmrope will make sure that you will be satisfied with it. For any reason if you don't like. You will receive a full refund. try it, totally risk free! click add to cart now!. ?Details? : 100-PACK of heavy duty zip ties usable in many applications , 12inch with black color. ?Self-Locking? : Zip ties 12 inch with self-locking Fastener Design, strong durable powerful lock, easy handling and prevent snagging in tight. ?Premium Quality Material? : Plastic ties made of industrial strength nylon 6/6 material, and can be used in temperatures ranges from 040F to +185F (440C to +85C), weather resistant and outdoor in direct sunlight application is not an issue. ?Heavy Duty? : Strength tensile is decided by width-- Hmrope wire ties 0.14inch / 3.5mm wider make the zip ties stronger than the normal for more projects.