Test Sockets & Adapters > Test Sockets for BGA - Bumped chip - WLCSP - eMMC Package > Pitch from 0.80mm to 0.99mm > Through-hole (THT) soldering Test Socket > 
Various factors will influence the choice of the retainer solution chosen, such as:
- How many times will the socket be opened each day?
- Cost of socket?
- Is there any space limitation for the socket ?
- Access required to the die of chip / heat dissipation (open top?)
PLEASE SELECT THE RETENTION – RETAINER SYSTEM FOR YOUR FUTURE SOCKET :
