The waterproof cap will lock out the water.Waterproof Performance: Waterproof safety cord IP57 (IEC529).It is a connection requiring waterproof performance mainly in equipment wiring in a place where heat treatment such as heat gun can not be done.Stranded Wire ([[MM2]]):1.04 to 2.63Electrical Wire Tying Range AWG:16-14Color:Blue TransparentTotal Length (mm):26.9Outer Dimensions (mm):6.1Internal Dimensions (mm):2.3JIS Standard Product:xRated Voltage: 300VRated Current: 19A (1.25[[MM2]]), 27A (2.0[[MM2]])Compatible Tool: NH-64 (Nichifu exclusive tool)Insulator: Nylon