The 25-0503-30 is a 25-contact Pin-Line? Collet Socket with 3-level wire wrap pins termination. This 0503 series socket with gold-plated beryllium copper contacts, red UL 94-HB glass-filled nylon body. Rows of socket strips may be mounted on any centers and are end-to-end or side-by-side stackable for 0.100"grid or matrix patterns. Break feature allows strips to be cut to the number of positions desired.