The Remke RD20MR-BKNR Dome Cap Cable Gland is made from durable black polyamide, designed for cables with a diameter range of .23 to .47 inches. This M20 rated gland provides a secure and weatherproof seal, making it suitable for various electrical applications. Its robust construction meets industry standards, ensuring long-lasting performance in both indoor and outdoor settings. The dome cap design facilitates easy installation, making it an excellent choice for professionals seeking reliable and efficient cable management solutions.