Starlock adapter - makes your universal / OIS12 blades compatible with machines from Bosch and Fein - YouTube
Ocillating Multi Tools Shank Adapter For All Kinds Of Multimaster Power Tools Ois Starlock Oscillating Saw Blades Adapter - Power Tool Accessories - AliExpress
From Starlock® to OIS / OIS12 Multitool Adapter (screw)
Multi Tools Shank Adapter For Starlock System Multimaster Power Tools Oscillating Saw Blade Adapter For Starlock Machines To Ois - Power Tool Accessories - AliExpress
Amazon.com: Bosch 2609256983 Adapter : Tools & Home Improvement