This connector creates a seal when used with the Starlink Mini power cable. Made from ASA plastic to resist UV/Heat and marine environments. These are polarity correct, red is positive and black is ground. Requires 5/8" (16mm) hole. There are four 3 mm holes for mounting. A sealant is highly recommended when installing. This version has a threaded cap with silicone o-ring to seal when not in use, and a cable retention cap for when in use. Comes with four 3x12mm 316 stainless screws.
Price is for one each, photo shows both options for mounting.