Thank you for viewing. This is an RS-232C 9-pin to 25-pin adapter connector of unknown manufacturer. It is unused stock left over from my work several decades ago. It is sold as a set of 6, but individual sales are also possible if you wish. * In that case, I'm sorry, but the unit price will be slightly higher than the set sale. The connector part is equipped with a resin cover. However, only one of them is missing the cover on the 25-pin side. (The one in the lower right of the overall image) The quality is the same as unused, as it is only missing the cover. The following is AI-generated text; it's amazing from image recognition to text generation.... [Versatile] Since it is sold as a set of 6, it can be used for multiple devices simultaneously. Individually packaged, it is convenient for storage and carrying. [Easy Connection] It has a D-sub 9-pin connection terminal and can be easily connected. It is especially suitable for industrial equipment and old computer systems. - Connector Type: RS-232C connector - Color: Gray - Quantity: 6 - Package: Individually packaged - Connection terminals: D-sub 9-pin D-sub 25-pin Thank you for viewing.