OTCs 4813 171 piece shrink tubing set includes 13 different sizes of shrink tubing that offer protection and insulation for soldered connections and components. Tubing features a 2 to 1 shrink ratio with either flame or heat gun. Conventient molded storage case keeps tubing contained and organized. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.