With the Bosch s 644 D reciprocating saw blade, you cut through construction timber, wooden beams, and sheet materials like chipboard or mdf quickly and cleanly. Sharp teeth with a 6 tpi pitch and 4.3 mm spacing allow you to make rapid cuts without jamming. The pointed tip enables easy plunge cuts directly into your workpiece. In addition, the tapered body and 152 mm length give you great control when maneuvering curved cuts and reaching confined spaces. This pack includes 2 blades and fits all standard reciprocating saws via its universal shank.