SharkBite Max push-to-connect fittings allow you make pipe connections with half the insertion effort while withstanding double the burst pressure. Featuring a newly designed stainless-steel retainer, SharkBite Max delivers additional strength and durability while providing a 250-psi pressure rating. The re-engineered body allows you to insert the pipe using less effort and doesnt require a PEX tube liner. No soldering, clamps, unions, glue, or special tools are required for installation. They are the fastest way to connect PEX, copper, CPVC, PE-RT and HDPE pipe. The fitting can be rotated after installation for quick adjustments, and removing the fitting is just as fast with a disconnect tool, allowing fittings and valves to be changed or reused. (SharkBite push-to-connect fittings are the fastest when compared to other conventual plumbing methods. All other comparisons relate to first generation SharkBite push-to-connect products.)Can be easily removed using a disconnect clip, disconnect tongs or pro disconnect tool (both sold separately). No tube liner required for PEX. Stainless steel retainer adds strength and durability.