1" Copper, Push On Tee, Includes Insert For Pex Piping, For Proline Fittings, Heat Free Method For Joining Copper, CPVC& Pex Tube, Removable & Reusable Fitting System That Provides The Ultimate Flexibility, Contains Less Than .025 PercentWeighted Average Lead Content On Wetted Surfaces, California & Vermont Low Lead Compliant.