Adapter hex/ois12 for IFI renovator, Rockwell, Worx, Fein practice 240-607 - AliExpress
Fein Starlock Oscillating Multi-tool System Explained
Multi-Tool Adapter | JLC Online
Adapter suitable for Starlock such as Bosch GOP 18V Snap-in and Fein Multimaster oscillating Multimaster recording for Supercut saw blades : Amazon.nl: DIY & Tools