Square Slot Cutter Compatible for Dewalt 20V & Milwukee M18 Oscillating Multi-Tool to Cut-in Single Gang Wall Boxes,Outlet Cutter for Drywall,Efficient Carving Tool,1 Pcs Square-Shaped - Amazon.com
DEWALT XR Cordless Brushless 20-volt Max Variable Speed 2-Piece Oscillating Multi-Tool Kit with Soft Case (1-Battery Included) in the Oscillating Tool Kits department at Lowes.com