The heritage blades for the Arbortech AS170 and AS175 are used for removing mortar between thin joints and heritage restoration. The heritage blades are ideally suited for cleaning out the narrow lime mortar joints in historic buildings and cuts 1-3/8” deep. The Arbortech AS170 uses 2 reciprocating blades and an orbital cutting action to cut faster than traditional reciprocating saws. The process also produces less airborne dust than typical brick, mortar and masonry cutting. Set of 2 blades.