3M DBO/B-6 Series Direct Bury Splice Kit electrically connects 2 or more pre-stripped 18-12 AGW copper wires and moisture seals the connection for direct-burial applications. The UV-resistant polypropylene tube contains white mineral oil grease to provide a moisture-resistant seal. Rated for applications up to 600V. It is suitable for water-intensive applications such as golf courses, irrigation controls and outdoor lighting.