– Dezincification Resistant Brass Alloy – Gland Follower and Single O-Ring Stem Design – Stainless Steel Ball and Stem – Cap and Chain for Easy Drain & Hose Connection – Heavy Steel Chain – Blow-Out Proof Stem – 100% Leak Tested – IAPMO Certified - NSF 61 / NSF 372 – Wetted Surfaces Contain Less than .25% Lead Content