These heat shrink tubes are crafted from sturdy materials, with a pleasant texture that owns use. They are easy to install and use, with excellent performance that makes them ideal for a wide range of applications. Whether you need to apply them to your power supply or other electrical components, these heat shrink tubes will provide service. Features - ColorBlack - Material:Polyolefin - Size:8.50X1.30X1.30cm/3.34X0.51X0.51in - Size:8.00X1.00X1.00cm/3.14X0.39X0.39in - Size:8.00X0.70X0.70cm/3.14X0.28X0.28in - Size:4.00X0.50X0.50cm/1.57X0.20X0.20in - Size:4.00X0.35X0.35cm/1.57X0.14X0.14in - Size:4.00X0.25X0.25cm/1.57X0.10X0.10in - Size:4.00X0.20X0.20cm/1.57X0.08X0.08in - Temperature resistance: 125 degree centigrade. - Withstand Voltage: 0.6KV. -This heat shrink tubing set is suitable for protecting solder joints, marking group lines, and protecting resistors and capacitors. -Practical heat shrink tube provides protection against abrasion, and other damage to cables, solder, and plug connections. -The heat shrink tubing offers excellent electrical insulation, let you own satisfying using feeling. -Made from good workmanship, these heat shrink tubes are safe and insulated, ensuring use. -Excellent performance and a variety of specifications available, these heat shrink tubes can fit for your requirements very well. Package list: 120 x heat sink tubes(2mmx40mm) heat sink tubes(2.5mmx40mm) 80 x heat sink tubes(3.5mmx40mm) 80 x heat sink tubes(5mmx40mm) 64 x heat sink tubes(7mmx80mm) 32 x heat sink tubes(10mmx80mm) 32 x heat sink tubes(13mmx85mm)