SELF SEALING STEM BOLT
A prop self-sealing stem bolt prop made from painted acrylic plastic and brass with spring-loaded pins and untested blinking lights and an open foil wrapper -- 5¼in. long -- featured in closeup in "Progress" in Star Trek: Deep Space Nine
This lot is offered without reserve.
No one knows exactly what a self-sealing stem bolt is, or what it does. In fact, it was an ongoing gag by the writers of Star Trek: Deep Space Nine, who frequently referred to the gizmos, but never actually explained what they were.