that specializes in stuff like that.. Its not screen-used, tho.. I just tried to shoot a pic of the wrench, but it came out pretty bad.. on the shaft he signed "GRRRRRRRRRRRRR" and his name is on the open end of the wrench..
I just found the photo of David Hasselhoff that he holds up and throws down when Team Blitzkrieg loses to Average Joes.. They want $295 for it.. Tempting... Not a Hasselhoff fan, but this item is definitely identifiable in the movie.. this pic here:
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..