SharkBite Brass Barb Reducing PEX Tee SharkBite's PEX Barb Reducing Tees come in a variety of different sizes and allow for pipe-size reduction in multiple ways. The SharkBite PEX Barb fittings are compatible for potable water distribution and hydronic heating applications. These fittings can be used in both a stainless steel clamp system, or a copper crimp ring system as well seach sold separately . Approvals ASTM F1807, NSF/ANSI 61, NSF 372. Size 3/4 In. x 3/4 In. x 1/2 In. Barb, Material Brass, Pkg Qty 10, Package Type Bag Warning This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.