Circle cutting attachment for use with RotoMite and SpiraCut RotoZip tools, cuts circles from 3-1/2 to 12 inches in diameter, use for recessed light ceiling cutouts in acoustic tile and drywall. Includes: X-Shield,Type:Right Angle Attachment AB Cutting Diam:3 1/2 in [min], 12 in [max], Length 2.3", circle cutter,AC for model:ZM3-1100, shield AD type-Jigsaw Handle.