The Bosch Rotozip RZ20 is a versatile, corded rotary tool designed for cutting, grinding, and sanding various materials. It's known for its ability to make precise cuts in materials like drywall, wood, and tile. Key features include a 3-jaw chuck for easy bit changes, a sealed switch to prevent dust contamination, and a quick-release detachable handle. It's part of the Rotozip spiral saw system and can be used with various attachments for specialized tasks like cutting tile or making plunge cuts.