WEATHER-RESISTANT CONNECTION This waterproof extension cord connector provides a watertight sealed space to protect outdoor & indoor plug connections from the elements like water, snow, rain, dust, and dirt to ensure circuit safety ( Note: It is just water-resistant. Do not submerse it in water) AMPLE & AJUSTABLE COMPARTMENTLarge housing holds both multiple connections and one on one connection; compatible with AWG 12/14/16 extension cord and flat cable; slide to adjust the position of the limiter for different lengths of connections