The Cable Seal Plug from GMP Tools is designed to effectively accommodate cable sizes ranging from 9 to 10.5 mm (0.35 to 0.41 inches), ensuring a reliable seal for various cable placing applications. This high-quality plug, with part number 89127, serves as an essential accessory for cable blowers, enhancing the efficiency and safety of your cable installation projects. Packaged individually, it offers convenience and ease of use, making it a valuable addition to your toolkit for reliable cable protection.