357 Series (.156" (3.96mm) contact spacing) Card Edge Connector with 35 Wire Wrap contacts with gold plating on the contact area. The tails are .046" x .014" (1.17mm x 0.36mm) thick and .495" (15.57mm) long in a Single Row formation, reading both sides of the daughter board. The Insulator is Black in color with M3-0.5 Metric Threaded Inserts.