Ideal Industries, Inc. Hole Saw 35-377

VARIABLE PITCH TYPE FERROUS METAL, NON METAL CUT MATERIAL BI-METAL BLADE MATERIAL 3 1/2 INCH DIAMETER 95 RPM (MILD STEEL), 45 RPM (STAINLESS STEEL), 65 RPM (CAST IRON), 130 RPM (BRASS), 145 RPM (ALUMINUM) SPEED RATING 3 1/2 DIAMETER - FRACTIONAL 1 5/8 INCH CUTTING DEPTH 4 TO 6 NUMBER OF TEETH PER INCH IRONMAN[T] BRAND USED WITH ARBOR NUMBER 35-394, 35-536, 35-537, 35-538