Blue Sea Systems PowerPost+ battery cable connection post, part number 2103. This is new old stock and appears unused; it’s still in the original packaging. It’s a compact distribution post for smaller terminals, with tin-plated brass studs for corrosion resistance and a red insulating cover. Marked for 3/8 in main terminal diameter. Packaging shows some shelf wear/creasing from storage, but the part itself looks clean. You’ll receive exactly what’s shown in the photos.