This Bosch Oscillating Tool Universal Adapter combines a variety of tools into a single oscillating tool system. With its 12-pin design, this oscillating tool adapter works with a variety of tool brands (Dremel(R), Fein(R) 250, Tool Shop(R), Craftsman(R), Chicago Electric(R) Power Tools, Performax(TM), Rockwell(R), Masterforce(R), Mastercraft(R) and other OIS adaptor tools) to provide a secure connection between tool and accessories for high-torque applications.