37mm Watch Case Wrench (30.75mm jaw width) (Back Opening Tool for SNK809)

This is a quick and dirty remix on the case tool by Chuckdotdot. I simply moved the faces of the wrench outward by 1mm each to increase the inner diameter (jaw-to-jaw) from 28.75mm to 30.75mm across, to fit a 37mm case watch like my Seiko SNK809.

Worked perfectly! For those of you opening your case for the first time, be forewarned that the case is screwed VERY firmly, and take care not to crush the o-ring or allow dust/etc. into the watch when working.