Innovative push-to-connect design makes for quick and easy installation when connecting two pieces of pipe. Ideal for working in tight spaces. Faster install time and ease of use reduces installation errors.Compatible with PEX, copper, CPVC, PE-RT and SDR-9 HDPE pipes in any combinationNo special tools, crimping, soldering or glue requiredCan be installed in wet linesApproved for underground and behind-the-wall applications with no access panels (wrapping required when burying underground)Large diameter fittings (1-1/4 to 2 in) require a stiffener (sold separately) when connecting to PEX pipeRemove using a disconnect clip or disconnect tongs (both sold separately)