Wiss HM41V HVAC Compound Action Pipe and Duct Snip The handle is made of high tensile strength steel with rust resistant blades and carbon steel jaws. Popular for cutting rigid, non-metallic sheet materials such as fiberglass panels, plastic kitchen laminates and synthetic shingles Matte black finish and red plastisol grips. Recommended maximum capacity for low carbon cold rolled steel is 20-Gauge. Cushioned handles for all weather comfort