![Female Headers (Straight 40-pin)](http://www.canadarobotix.com/cdn/shop/products/439_20_1_{width}x.jpg?v=1571749844)
Single row of 40-holes, female header. Can be cut to size with a pair of wire-cutters. Standard .1" spacing. We use them extensively in the Olimex development boards. They mate very well with break away headers.
Please note: You will probably lose one pin with each cut.