Walt, for your purposes, the size and configuration are all that matters, any form factor that fits the K-Line switches will be able to handle the current. Yes, these are snap switches, and you may have to order some samples. The ones K-Line used are Chinese clones of some commonly available switches, so you will find them but with a little effort and assistance with a micrometer or digital calipers.
Have you pulled one and checked with a magnifying glass to see if there are any markings? That would be a start, anyway.
