High Quality Material: Made of high quality ABS plastic, this T-connector is oil resistant, flame retardant, high temperature resistant, anti-aging, long service life and not easy to damage. Usage: This tee connector can be used to connect to corresponding backbone cable (not included), creating a simplified, color coded network installation. Wide Application: For NMEA 2000 Certified, the multiport Tee connector is universal and compatible with other manufacturers' products, dependable to use. IP67 Waterproof: The connector has IP67 waterproof grade, Can be submerged in water, can be used in the marine environment and any weather conditions. Easy to install: Easy to install, no complicated operations are required, easy to use, time-saving and labor-saving.