This Jones Stephens S04219 is a flexible ballcock connector. It features a leak-proof seal and exclusive crimp-on fittings enabling this connector to perform in its maximum capacity. Installing this connector is really easy even in tight spaces, as it doesn't need any tools or soldering. Also, this lead-free product resists temperature from 33 degrees (F) up to 174 degrees (F). This S04219 has 3/8 inch OD, 7/8 inch BC, and a length of 20 inches. Having approved by NSF, this chrome-plated nut connector is safe to use.