When wires become entangled they are safety hazards, for both the equipment and the owner. Gardner Bender offers a variety of products for protection and neatness. As the needs of professional electricians change in managing wire and cable, Gardner Bender continues to deliver innovative solutions. Safely insulate splice connections or re-jacket electrical wiring with the Gardner Bender Heavy-Wall Black Heat Shrink. This heat shrink maintains a seal in underground, direct burial and submerged applications. Can be used to insulate and repair wire and cables.