The copper connector kit is designed for use with gas or electric systems. The connecting kit is used where cold supply or hot distribution lines are 3/4 in copper and not threaded. The kit includes two 3/4 in NPT x 2 in dielectric nipples, two 3/4 in x 15 in flexible water connectors, one roll of Teflon tape, two 3/4 in NPT compression adapters and one 1/2 in x 24 in stainless steel gas connector. Can be used on gas or electric water heaters, this installation kit contains 2-3/4 in iron pipe size x 2 in dielectric nipples, two 3/4 in x 15 in flexible water connectors, one roll Teflon tape, 2-3/4 in MPT compression adapters.