Low Lead 1/2-Inch Barb X 1/2-Inch MPT Pex Adapter * No soldering, no threading, and no waiting * Solid, leak-proof connection completed in a matter of seconds * Listed by the NSF International to NSF Standards 14 and 61 for use in potable water systems * Low lead brass is not more than a weighted average of 0.25% lead when used with respect to the wetted surfaces of pipes and pipe and plumbing fittings and fixtures