Non of your flimsy, tin-foil-esque jacks here. These are tip-top quality.
What more can be said? Wire them up to your pedals and plug stuff in.
Why do i need stereo? My guitar cable is only mono...
Check those wiring diagrams. Most set-ups use a stereo jack to disconnect the battery power when you pull your jack out. Great eh?
Drill size: 9.5-10mm