Fein StarLock Adapter Supercut Without QuickIn for FSC 1.6 and 1.7 - Adapter Plus Mounting Screw Included - 35222952040 - - Amazon.com
Bosch 4 Amp Corded StarlockPlus Oscillating Multi-Tool Kit (32-Piece) GOP40-30B - The Home Depot
Fein Starlock Oscillating Multi-tool System Explained
Oscillating Multi Tools Shank Adapter For All Kinds Of Multimaster Power Tools Oscillating Saw Blades Adapter (not For Starlock) - Power Tool Accessories - AliExpress
Multitool Adapter™ - Click-In Edition - Oslo Tool Company Int.