Suntour ST-TA230 tool. Ultra rare. A noted mechanic in my town owned one at the time he died a couple years ago. It's that kind of tool. The mechanic in question had called me up and said "Hey I've got that BB tool you need, bring the frame over." Then before I could get there, he died. Now his estate's got it. I'm not making this up.

Since it proved impossible to find, I made one of my own by enlarging the teeth on a Park tool (by welding and grinding).

Those flexy two-pin tools may work, on the other hand they may be useless and leave tool marks if the cups are compressed against each other fairly tight.

Oh yeah, there are some very similar looking Suntour tools for other applications, but don't be fooled, they won't fit.