These XT60 panel mount connectors make it easy to connect a charger or battery port to your project. Bolt hole center-to-center is approximately 20.6mm (.811").
Each bundle contains two (2) panel-mount male connectors and two (2) standard female connectors, both yellow in color.
These take 2.5mm screws, which are not included.
Note that Amass have updated their panel-mount connector design, which now includes 'wings' fully surrounding the male pins as shown in the last two photos.