I have been advised these are Bendix connectors , although many people call these Cannon's, myself included ..

Here is one manufacturer's page on these things : 

https://www.amphenol-aerospace.com/Resources/Literature/View/So-You-Want-to-Know-Connectors

Has tons of mixed pieces, too many to list.. I never used the kit.. The wire crimper wasn't with it but there is the punch-like special tool and a small soldering torch head with it ..

Kit is primarily for building/repairing your own multiwire plugs and cables, but it also includes some vehicle lighting parts such as rubber Packard connectors and the older metal ones as well ..

At certain vendors, just one of the coupling nuts is 6 bucks and there are several nuts of that size in this kit.. They list larger connectors identical to others in this kit at $28 to $35ea ..

There is about a dozen very large barrel connectors @#2AWG size , several @#6A SWG size , hundreds of the smaller pin-type ones, tons of round collars, adapters, NOS brass split collars in unopened bag (dated 1986) , insulating barrels, multiwire rubber grommets of different sizes, etc .. Too much to list.. See pics

The OEM military box measures approx 16"W x 4"H x 7" deep .. One hinge needs to be spot-welded back on.

To split this up and sell individual pieces could net around $1000 according to what I am seeing at vendors .. I am asking $450 but will consider offers ..

Come get it or I can ship, no idea on shipping cost , it is about 30 pounds.  I will need your zip to estimate shipping