This De Walt DT2440L-QZ 6 Piece Reciprocating Saw Blade Set has been designed to provide longer lasting, faster cutting blades for a wide range of sawing requirements. Complete with a hassle-free, re-useable storage case they have an optimised tooth design with a 14/18 tpi variable tooth geometry that reduces tooth breakage in hard materials. The superior HSS teeth have added cobalt to further harden the teeth while retaining greater flex for faster cutting & a long service life. Fast & accurate cutting in wood is provided by the Plunge Point Tip Technology which pieces wood with ease while removing more material. The aggressive shank angles increase tooth engagement in a variety of materials & extends blade life, while the increased blade height & thickness provides strength & durability.