345 Series (.100" (2.54mm) contact spacing) Card Edge Connector with 50 P.C Tail type contacts. The tails are .030" x .018" (0.76mm x 0.46mm) thick and .175" (4.45mm) long in a Double Row formation. The Insulator is Green in color and has Flush Mounting Lugs with #4-40 Unified Threaded Inserts.