Starlock adapter - makes your universal / OIS12 blades compatible with machines from Bosch and Fein - YouTube
Bosch Fein Festool STARLOCK Adapter auf OIS | eBay
Fein StarLock Rigid Oscillating Scraper Blade - Short Version for Removal of Adhesive Residue, Carpet, Tile Adhesive and Underseal - Fits Most Multitools - 63903165210 - - Amazon.com