Speedfit push-fit fittings make joining Copper, PEX, CPVC easy. Incorporates Twist-to-Lock feature for added security. Connect Cooper, PEX or CPVC in any combination. Fast and easy to use - no tools, soldering, glue or clamps. Approved for behind-the-wall applications and can be used for permanent installations. Ideal for work in tight spaces. Can be disconnected without damage to tubing.