To avoid damage when cutting pallets, reciprocating saw blades are built with specific design features. First, they have a particular shape designed to ensure smooth cutting; second, the blade material itself is a bimetallic alloy of two types of steel of different hardness, sturdy enough to cut metal as well as wood while keeping the necessary flexibility. Finally, blades of this type have a variable-pitch toothing, 10/14 teeth per inch, which has proven the best for not jamming when it meets the nails driven into pallets and for ensuring efficient ejection of the cut material.