BRENNENSTUHL - Extension cable rubber, H07RN-F 3G2.5, IP44, 20 meters, black - 1161104.
Professional durable quality extension cable, IP44 = protected against solid objects larger than 1 mm (such as wires and insects) and against splashing water from all directions.
Can be used, for example, to extend the cable of your plug-and-play microinverter. Outer diameter approximately 8mm.
PDF datasheet