SUPERIOR QUALITY: HeSun copper stub-out elbows offer lead-free, safe plumbing solutions. Crafted entirely from high-quality copper, guarantee long-lasting performance. PREMIUM MATERIAL: Our copper stub-out elbows are Certified to ASTM F1807 and NSF/ANSI 61 standards. Approved for potable water applications and compliant with drinking water standards. GREAT PERFORMANCE: Great essential for connecting PEX and copper tubing from walls or floors. Provide stability and seamless connections for various plumbing fixtures. BROAD COMPATIBILITY: Compatible with stainless steel clamp rings, PEX Crimp tools, and copper rings for installation. Not suitable for use with Expansion System and PB tube. PACKAGE INCLUDE: 20 pack 1/2 inch & 6-inch length F1807 Crimp copper stub out elbows with wall flange, featuring pre-drilled mounting holes which ensures easy installation.