Polypropylene construction, Expands up to 21 in to reach pipes that have been cut short and to help repair damaged sections of pipe, Flexible to create angles or turns, maximum working pressure of 70 psi, minimum working temperature of -50 deg F and a maximum working temperature of 150 deg F, adapts to fit 3 in or 4 in corrugated pipe and 4 in PVC pipe (not included), DWV applications.