The CA-133 FXLR cord end connector is a basic connector. This is an economy grade connector and is suitable for medium duty applications. There's nothing really special about this connector other than it's inexpensive, and fully compatible with standard 3 pin XLR connections.
One screw holds the contact assembly in the body. Two screws tighten the cord clamp.
The body is nickel silver finished steel. The contact points are reasonably good quality spring steel.