3" x 1/2" x 25' roll, fiberglass pipe insulation kit. Simple, effective way to insulate pipes of all diameters. Ideal for overwrapping electric heat cables used to prevent water pipe freezing. Covers 17' Of 1/2" Pipe, 12' Of 3/4" Pipe Or 10' Of 1" Pipe. For Either Hot Or Cold Water Pipes. Made In USA.