Type UGS watertight underground splice kit consists of a standard ams splice/reducer and two heavy wall heat-shrink sleeves, the ams splice is dual-rated for use with aluminum and copper conductors and are constructed from high strength, tin-plated aluminum that provides low contact-resistance and reduces the effects of galvanic corrosion, connector installed with common installation tools, both heavy wall heat shrink sleeves are lined with adhesive material, providing a watertight splice that can withstand abrasions that may occur during direct burial applications, heat shrink sleeve installed with standard propane torch or electric heat gun.