This HERCULES™ 20V Cordless Drywall Cut-Out Tool has a high speed motor with sealed bearings for professional jobsite performance and durability. The powerful 27,000 RPM motor produces fast plunge cuts in drywall, acoustical ceiling tiles, plywood and other installed surface materials. Tool-free bit change makes it easy to swap spiral cutting bits for carbide bits to cut harder materials. Professional drywall bit included.