Fein MultiMaster High Speed Steel (HSS) Segment Saw Blade is for fiberglass, carbon fiber, 20 gauge sheet metal and harder woods. The blade is segmented and flat to cut right angles without overcutting. Diameter: 3 1/8 inch. Cutting Depth: 1 1/16 inch. This Fein 6-35-02-106-01-5 Mulitmaster 3-1/8-inch HSS Segmented Cutting Blade is ready for the toughest job that you can think of. Ideal for working in corners.