Kraloy Conduit Adapter, 1 in Size, FNPT Thread, For Use With: Rigid Conduits, PVC, 2 in L Dimensions Kraloy couplings, terminal adapters and female adapters retain their original properties after years of exposure to heat and weather. Kraloy couplings, terminal adapters and female adapters resistance to fungi, bacterial action, rodents, termites and corrosive agents ensures a long, trouble free live for PVC conduit installed indoors or outdoors.