Compression fitting ideal to be used for connecting Copper Tube Size (CTS) polyethylene pipe. High-quality thermoplastic compression fitting. No special tools are needed - the nut can be tightened using a wrench. Features Slide & Tighten technology making installation simple. Made from advanced thermoplastic materials. Corrosion-resistant ensuring a long service life (50+ year design life). Composite construction means there is no leachate of heavy materials and is completely free of lead. Used in service lines on both the municipal and private-side of a project.