Reciprocating saw is a versatile tool so you can cut through wood whether it is lumbar or trees. You can use this for metal cutting whether it is aluminum copper or even cast iron, you can cut through plumbing pipe, cars, Rebar. You can also cut through plastic such as PVC pipes, shingles. This is used to cut drywall, tiles, fiberglass, brick, cement board.
NOTE: These saws are not used to perform cutting action through window glass.