S 522 EF Flexible for Metal Reciprocating Saw Blade is designed for use with compact saws Fine tooth pitch (1.4 mm) cuts sheet metal with most common thicknesses BIM blade is engineered for long lifetime when cutting regular-strength sheet steel Fits all S-shank reciprocating saws BIM blade is engineered for long lifetime when cutting regular-strength sheet steel Fine tooth pitch cuts medium-thick sheet metal with a thickness 1.5 mm to 4 mm