New Craftsman policy is only to guarantee box wrenches not socket wrenches. I'm not sure if they sell a higher tier wrench that does come with a guarantee. If you buy an older socket wrench (via e-bay...) they may cover it... best to go to Sears and ask specific questions before hand.

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html