The splice kit UF series consists of a connector insulation assembly and a heat shrink tube. The connector assembly contains four cylindrical setscrew connectors separated by a piece of vinyl insulation. The heat shrink tube is a heavy wall, adhesive lined tube and is UL listed and rohs 2011/65/EU Compliant. It withstands a temperature range of 67 to 230 deg f ( 55 to 110 deg C).