Enhance the durability and performance of your circular connectors with our HEX40-AB-00-21-A9-3 Backshell. Made of aluminum alloy with cadmium plating, this straight-oriented backshell ensures secure connections in high-stress environments. Designed for shell size 21, it provides a reliable solution for various applications. Perfect for military, aerospace, and industrial use, this backshell is a crucial component in maintaining signal integrity and protecting your connectors from damage. Upgrade your system with this essential accessory for long-lasting and dependable connectivity.