This is a Double-Side PCB Circuit Board,each PCB board has 16 pins.
A side for pin pitch size 1.27mm,it can be used for most of the SO16/SOP16/SOIC16 to 2.54mm DIP.
B side for pin pitch size 0.65mm,it can be used for most of the SSOP16/TSSOP16/MSOP16 to 2.54mm DIP.
The PCB board mounting 2.54mm pitch Pin Header,it can be plugged directly into 2.54mm pitch PCB board,breadboard and 600mil width 16 pin DIP socket.
Dimension: Please refer to below the picture.
5 pcs DIP Converter PCB Board