Warming Trends FK2 Double Flex Line & Key Valve Kit offers a premium accessory kit for your fire pit that features heavy-duty construction. These components have been designed to withstand the rigors of frequent use and outdoor exposure. This kit features (2) 36-inch long by 3/4-Inch diameter flex lines, a 3/4-inch key valve, a 4-inch key, a 12-inch key, (1) 3/4-inch by 1/2-inch MM reducer fitting, (1) 3/4-inch tee for connection at 1/2-inch plate coupling, (1) 3/4-inch by 3-inch nipple, and (1) 3/4-inch tee for a key valve connection to help you complete your fire pit install. These components are designed for use with fire pits rated for over 249,000 BTU.