● Self-locking head and body design ● Provides quick and convenient application ● Material: Thread: nylon, thread: polyester, base: synthetic candle ● Heating temperature: 230 °C for the hook, 180 °C for the loop ● Operating temperature between -40 °C and + 85 °C ● Min. The temperature at which the product is placed: -20 °C ● Waterproof: It can be used underwater, reducing tensile strength by 50 percent, but restoring tensile strength after wear. ● Chemically stable in solutions of sodium hydroxide (50%), ammonia (28%), hydrochloric acid (2.5%), and nitric acid (3.5%). ● Stretch resistance: 1x1in cm connection: 25N, pulling force: 1x1in cm connection: 3N