These are TexTool, Aries, Yamaichi & AMP
Zero Insertion Force Sockets

The large SPGA (Staggered PGA) ZIF sockets are for burn-in and test. They have been designed for high cycle use and high temp.
The AMP 432 pin SPGA is quite rare to find as new in factory packaging, as Press Send has several.

These are factory new parts. They have never been installed and have not been recovered from manufactured electronic components.