Arrow Fastener Electric Drywall Single Box Cutter is cuts through drywall in seconds, making this the fastest and easiest tool to use for installing single gang electrical boxes. Highlights: Material: Steel 2-7/8 x 3-3/4 Single Gang Box Cutter Cuts a hole 3 3/4 inch x 2 7/8 inch drywall perfect for installing old work single gang electrical boxes Compatible with most industry-standard oscillating multi-tools Constructed from stamped steel for long life and durability