S-K is my favorite for a lot of things- especially ratchets. I do think if the guts explode- signs of abuse, it’s yours, or if it was dunked in salt water- and there’s no saving the guts, it’s yours, but yes they are warranted. I actually have a SK tool dealer that comes weekly. I have a “diamond” era- late 60’s 1/2 ratchet that blew up, and he saved to for me.