An overview of JST-GH contacts and connector housings
It's recommended to buy jumper wires with pre-crimped contacts and connector housings. You can easily insert the jumper wires into the connector housing.
2 inch, black: Digikey
4 inch, black: Digikey
6 inch, black: Digikey
8 inch, black: Digikey
10 inch, black: Digikey
12 inch, black: Digikey