This board has two sides. One side can be used to convert QFN24 pin pitch 0.5 mm, 4x4 mm IC to DIP24 (2.54mm pin pitch). The other side can be used to convert QFN24 pin pitch 0.65 mm, 5x5 mm IC to DIP24 (2.54 mm pin pitch). For detail dimension, please see the gallery picture.