Soft plastic cover for the rear end of several D-size chassis connectors. It is used to protect the gap between connector and cable.
The protection cover works with all common wires and cables - simply cut off the cover end to the preferred diameter.
Does the connector come with screws for screwing into the rack panel?
The Neutrik connectors do not come with screws but you can buy the product here: https://www.pennelcomonline.com/au/Neutrik-Plastite-Screw-29-x-8--x100--for-plastic-connectors-A-SCREW-1-8-BAG-of-100/m-4496.aspx