These are bulk packs of Seetronic 3-pin and 5-pin XLR connectors. Bulk packs come in male-female pairs. So, a 10-Pack has 10 male connectors and 10 female connectors, and so forth.

Product Descriptions 3-pin ...

This Neutrik Rubber Cap is intended for use with XLR or etherCON cables. It provides protection when your cables are not in use. Slip it over the cable connector to seal it off from dust and debris. A cable attachment loop is provided so you...

MATERIAL Housing: Copper alloy, nickel-plated. Pin and Socket Contacts: Copper Alloy, gold or silver-plated. Flex Relief (optional): Stainless Steel Latch Button: Thermoplastic. Inserts and Insulating...