drawers and switches

Hi all, I'm looking to put rocker switches into the rear side wing panel of ARB drawers ( their on order) , the end piece facing out, , does anyone have any ? could you tell me how thick they are? I think their tin, so probably a couple of mm, just want to make sure before I buy a heap of gear off eBay.
It's Sunday and all the distributors are close, I could wait till Monday and ring, but I'm keen to know and get stuff ordered.
many thanks