Specifications:

specialized programming adapter for STMicroelectronics STM32F446 devices in WLCSP81 package
used ZIF socket may accept one or more 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 - 10,000 actuations
supported from PG4UW software version 3.51c
made in Slovakia
Ord. no.        70-5209
Socket        ZIF BGA81, ClamShell type
Bottom        2x24 pins, square, 0.6x0.6mm, rows spacing 600mil