Activation box style 9

Hi there!
I have a question: I want to get an activation box for my 16mm momentary switch. So, you can chose a service: box mounting service. So you it fits you'r switch and activation box I think? But there is a second hole and i dont know what i should put in there.
Thanks!
- RetroWolf

It's listed right in the description, as well as showing a photo...
http://www.thecustomsabershop.com/Ge...es%2fbox9d.jpg

Quote:

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Activation box style 9

Holds one 16mm AV style switch and a recharge port.

Designed to be mounted using a 4-40 button head screw which we sell.

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