Designed for cutting extremely tough alloys used in the aircraft industry. Used by DIYers, roofers, mechanics, autobody workers, plumbers, heating and cooling specialists, electricians and maintenance workers for cutting gutters, flashings, ducts, aluminum siding and galvanized steel in acute angles and complex patterns. Non-slip serrated jaws made of extra tough, wear-resistant molybdenum steel to provide extra service demanded by the compound lever action. Withstands severe strain of cutting heavy stock and tight curves. Spring-action for fast, effortless feed. Handle of high tensile strength alloy steel exceeds hand power limit. Handy hang-up hole. Non-slip, textured grips and safety latch for control, safety and comfort.