For waterproof splicing of UF cables minimum No. 14/3, No. 12/2, maximum No. 8. Kit includes set screw splice connector and 8-inch x 1.3-inch diameter heavy wall heat-shrink tubing with watertight adhesive liner. Simply strip outside jacket and insulation from conductors, insert cable thru tubing, install conductors into connectors and tighten set screws. Center heat-shrink tubing over connector and heat tubing until it assumes the connector configuration.