End cap switch source needed

[8th]

I have a couple older/ cheaper lights I like to use in the house which need new end cap switches. I've tried to find an online general source of information as to how to determine the type or size of replacement switch I'd need but have had no luck. Can anyone point me in the right direction? Thanks in advance.

 

[KITROBASKIN]

What flashlights are you looking to replace switches?