Will these work on all Seiko's, and same for the Omega tool too. All models? I always thought some particular models were different keys or spacing for case openers. Please correct me if i'm wrong here, I just didn't really pay attention to this detail.
I like the idea of not scratching backs, I've done that few times.
Nope one tool is designed for Seiko SKX casebacks other side is for the Seiko 5 casebacks and another tool for Omega they're brill tools as ZERO risk of marking. I've got a $600 caseback tool but find this tool great.
I have one that's a similar idea, made of aluminum and this particular one is for Accutron 214 and 218 cases. Works great and doesn't tend to scratch if used carefully due to the softness of the aluminum.