This tankless water heater installation kit includes the essential components needed for cold and hot water plumbing connections in one package. It features isolation valves, a pressure relief valve, a ball valve, gas and water hoses, connectors, and thread seal tape for a streamlined setup. Built from lead-free brass, SUS304 stainless steel, and PVC, it is designed for durability, corrosion resistance, and reliable leak protection. Standard 3/4" connections make it compatible with most tankless water heater brands for residential or commercial use.