Designed for Use with Compact Saws. S 522 AF Flexible for Metal Reciprocating Saw Blade is designed for use with compact saws. Very fine tooth pitch and wavy-set teeth enable effortless smooth cuts in thin material. BIM blade is engineered for long lifetime when cutting regular-strength sheet steel. Very fine tooth pitch (1 mm) for cutting sheet metal (0.7 mm to 3 mm).