Built-in wire cutter lets you finish the job you started with just one tool Double edged blade cleanly pierces through outer skin and insulation. Cuts from either direction around entire circumference of duct. Fine honed blade is long lasting stainless steel. Wire cutter cuts hardened wire rib coil. Compound leverage, for easy wire cutting. Comfortable, non-slip vinyl gripped handles. Malco® Duct Cutter, Flex, 4 in L Bit, Stainless Steel Bit, Silver, 11-7/8 in L