The CRD200SS Tubing Expander performs a controlled internal expanding operation in the end of most plastic and rubber tubing material. The foot pedal and robust air cylinder perform an expanding operation, increasing the size of the tubing, and allowing ease of the fitting insertion, as well as securing the fit as the specialty tubing recovers to its original size. The CRD200SS goes one step further and has a fully stainless steel base. For more info and pictures please ask.