2 x 40 Berg Strip stright Female Connector. Break it to the required number of pins. Also, custom PCBs or general custom headers use these types of connectors. which is suitable for many applications where the connectors are many times like prototyping
It is a 2.54mm 2×40Pin Female Double Row Header Strip
Mounting Type Through Hole
Please note :
You will probably lose one pin with each cut.
1 x 2.54mm 40x2 Pin Female Double Row Header Strip