This kit includes the parts required to add another HAT on top of the MacArthur HAT with enough clearance to no interfere with the DC/DC module.
See the documentation of the MacArthur HAT for details.
Kit contents:
- 1x 40-pin stacking header, 8.5mm plastic body, 5.5mm pins
- 4x M2.5 20mm hex stand-off, brass
The kit does not include M2.5 screws or nuts, as you will reuse/relocate the screws already provided with the MacArthur HAT.