This is a splittable 40 pins 30cm length male-female jumper wire for 2.54mm, it is super flexible, can be transformed from 1-40 pin jumper wire. With some of these, you will no need to worry about the jumper wires you got before do not fit your project, just split it and go.
Package List:
1 x 40 pin male - female splittable jumper wire - 30cm