Premium MaterialThe Black Cable Glands are made of PA66 nylon and EPDM plastic, with strong durability, has excellent wear resistance and heat resistance, static working temperature is -40C to 100C, dynamic working temperature is -20C to 80C.IP68 Waterproof GradeThe Nylon Cable Glands have high level waterproof of IP68, come with durable rubber gaskets for good sealing performance. The IP68 rating level make cable glands can resist to salt water, alcohol, oil, weak acid and common solvents, provide a effective protection for your applications.What You Will Get4 x IP68 Waterproof Cable Glands. Size: NPT 1/2". These cable glands fit cables range 7-12.5mm / 0.275"-0.49". These cable grands adopt a spiral design, perfect for various cables and wires, can provide better protection for wires and cables.Widely ApplicationThe Spiral Strain Relief Cable Glands are widely used in cable fixing, junction box connections, distribution panels, elecl cabinets and other elecl appliances. The cable gland is easy to install without disassembly.Risk-Free ShoppingIf you have any questions or problems during the purchasing or not satisfied with the product, please feel free to contact us via Amazon email, we will try our best to give you a satisfied solution. Please rest assured to order, we wish you a happy shopping experience.