The Pax 3 Vaporizer is a popular portable vaporizer that can be used for dry herb, concentrate, and extract. It is known for its sleek and discreet design, as well as its efficient heating technology. Some common parts that may need to be replaced over time include the oven lid, vapor path, and mouthpiece. Other optional parts that are available include a half-pack oven lid, multi-tool, and maintenance kit.