Multitool Adapter™ - Perfect fit for Makita™ - Oslo Tool Company Int.
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: Makita 196271-6 Multi-Tool Adapter : Tools & Home Improvement
Makita 18V LXT Sub-Compact Lithium-Ion Brushless StarlockMax Cordless Multi-Tool (Tool Only) XMT04ZB - The Home Depot