Directly from One of the Biggest Pex Systems Manufacturers 20 Pieces Pex Crimp Brass Fitting 3/4"x3/4"x1/2“ Reducing Tee, Lead Free Compatible with Stainless Steel Clamp & Copper Crimp Ring Systems Compatible with all Types and Brands of Pex Tubing Certified with ASTM F1807 NSF/ANSI 61 NSF 372; Resistant to Corrosion Due to DZR Brass. Directly from One of the Biggest Pex Systems Manufacturers. 20 Pieces Pex Crimp Brass Fitting 3/4"x3/4"x1/2“ Reducing Tee, Lead Free. Works with all Brands of Pex Tubing. Compatible with Stainless Steel Clamp & Copper Crimp Ring Systems. Certified with ASTM F1807 NSF/ANSI 61 NSF 372. Resistant to Corrosion Due to DZR Bras.