High quality HCS Reciprocating Saw blade. Ideal for cuts in wooden exteriors. For fast, rough cuts and tree pruning. Harden teeth for extra durability. Equivalent to Bosch S1531L. 5 TPI , 220mm working length. High quaility HCS Reciprocating Saw blade. For straight and curved cuts. For fast, clean cuts in hardwoods, softwoods, chipboard, plywood and synthetics. Equivalent to Bosch S644D 6 TPI, 130mm working length.