Specifications:

top board of BGA adapters
used ZIF socket accepts many variants of supported package, different in ball diameter, ball high and/or body thickness, see section Accepted package(s)
operating (mechanical) warranty of ZIF socket - 500,000 actuations
supported from PG4UW software version 3.11e
made in Slovakia
Ord. no.        70-3221
Socket        ZIF BGA20, ClamShell type
Connection to BGA-Bottom-X        4x25 pins, square, 0.6x0.6mm