The plunge blades for the Arbortech AS170 and AS175 are used for general cutting of bricks and mortar. The plunge blades are designed for cutting a single brick height and 4-3/4” depth. The blades have tungsten carbide teeth and are perfect for single brick removal and toothing of brickwork. The Arbortech AS170 uses 2 reciprocating blades and an orbital cutting action to cut faster than traditional reciprocating saws. Set of 2 blades.