Brasscraft G2R10 C1 3/8 -Inch by 3/8 O.D. Straight Stop, Chrome Patented, one-piece mechanism provides years of smooth, 1/4-turn operation Made from machined brass rod for strength, durability, and lasting appearance 100-Percent leak tested to ensure reliable, leak-free operation IAPMO and CSA Approved Backed by BrassCraft's 65-year history and reputation for quality and service