3M™ Heat Shrink Tubing FP-301 is color coded for quick and easy identification of the wire. This split-resistant, flame-retardant tubing is used as shrink fit, electrical insulation over cable splices or terminations. The high expansion ratio tubing is mechanically tough, easily markable and resists cold flow. It is ideal for lightweight wire harness covering, fire-resistant covering, wire marking, wire bundling and component packaging.