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. The 1/4 in. red Heat Shrink Tubing is made from flame-retardant polyolefin for durability and resistance to solvents and fluids. This heat shrink tubing is ideal for cable bundling and marking.