Corded reciprocating saws plug into an outlet to make quick aggressive cuts through a variety of materials, including wood, metal, and nail-embedded wood. Corded reciprocating saws have longer run times and generally have more power than cordless tools. They are used in demolition, construction, metalworking, and other applications where precision is unimportant. Interchangeable blades are used to cut specific workpiece materials, such as wood or metal.