Malco FDC2 4-3/8-Inch Cut Capacity 12-Inch Flex Duct Shear with Built-in Wire Cutter
Cuts insulated flexible round duct and also cuts the duct liner's wire rib coil. Compound leverage provide smooth scissors cutting action and a big 4 3/8" cutting length makes the job go even faster. Pointed bottom blade easily punctures through outer skin, insulation and liner of duct to start the cut.