Which button should I use?

[edibowls]

I am making a parallel 18650 box mod. But I have no idea which button I should use.
I am going to be using 2 Sony vtc4 batteries in the device so I'm thinking I need a switch/ button that handles 20+ amps

 

[edibowls]

I also need a on off switch so I can keep the device from firing in my pocket. Do I need to add somesort of amp regulator so when I sub ohm I dont go.over the buttons amp limit?

 

[Katanakaji]

good luck finding an off-the-shelf switch rated at 20amps dc that will fit in a mod. there are several options including the use of transistors, relays, of pre-made boards that can handle over 20 amps and still use a small switch.