Safe and Environmental Friendly Material Shrink Wrap: Conform to UL224, CSA C22.2, RoHS standard and Sony-SS-00259 standard. Electrical heat shrink tubing material composition does not contain heavy metal and other environmentally hazardous substances. No slowly or long-term virulence. No need to worry about your health when using innhom heat shrink wrap. | Premium Quality Heat Shrink Tubing Set: Excellent flame retardant (UL 224, VW-1) and insulation performance. Soft and flexible wire shrink wrap, low shrinkage temperature-minimum shrinkage temp: +158℉(+70°C), fast shrinkage, easy and convenient to use with a heat gun. | Effective and Long Lasting Protection: innhom heat tube shrink has the advantages of good tightness, acid and alkali resistance, durable and anti-aging. Shrink wrap wire tensile strength: 14 Mpa. Dielectric strength: >20kV/mm. Elongation at break: >400%. Volume resistivity: >1.0× 10^14Ω.cm. Cold-resistant bending -22℉(-30 °C) × 1h without cracking. Use innhom heat shrink tubes instead of ugly and short-lived electric tape. | Functional Wire Shrink Wrap Tubing: Covers all gauges of heat shrink wires you'll need in RC hobbies and many other applications. innhom heat shrink tubing assortment is mainly used in wire connection, rust prevention and corrosion protection of solder joints, protection and insulation processing of wire end, wiring harness and electronic components. Also works well for protecting headphones and phone cables. | What You Get: Total 650pcs ratio 2:1 Black heat shrink tubes, 8 sizes. Supplied internal diameter, 150-1/24", 120-1/12", 100-1/8", 90-1/6", 80-1/5", 50-1/4", 30-5/16", 30-2/5". Single length 1 4/7". All packed in a plastic case for easy storage. innhom wire shrink tubing can ensure your pleasant shopping experience.