Adapting off brand attachments to Stihl Kombi tool.

[Norske]

I have some off brand attachments that I want to adapt to my Stihl Kombitool. They are 9 spline female on the tool itself. The tools are for harvesting fruit, one is a shaker and the other is a set of plastic fingers that were designed to harvest olives, I’m going to try to use it for cherries. The end of the kombi tool is a square female with two little wires that I think are supposed to act as a guide.
I have been able to find 9 spline shafts on both ends but not much else. Amy ideas or suggestions. Much appreciated.