Features Reliable Heat Shrink Protection: Provides a tight, secure fit around wires and connections when exposed to high temperatures, ensuring long-lasting insulation and protection Effortless Installation Process: Simply select the right size, position it on the wire joint, and apply heat with an air heater to achieve an effective shrink fit Superior Flame Retardant Quality: Designed to resist flames and heat, these sleeves offer enhanced safety for your electrical projects and prevent potential hazards Convenient Storage Solution: Comes with a sturdy plastic storage box, making it easy to organize and transport your heat shrink tubes wherever you need them Versatile Application Range: Ideal for insulating solder joints, protecting metal pipes and rods, and enhancing cable terminal connections for various DIY and professional projects Features: 1、It will shrink and wrap the protected things tightly under high temperature. 2、Easy to install: Select the appropriate tube, put it on the wire joint and heat it to make it shrink with an air heater. 3、Flame retardant, insulated and heat resisting. 4、Come with a plastic storage box, convenient to carry and use. 5、Widely used in insulation protection of solder joints, inductors, prevention and protection of metal pipes and rods. Specification: Features: 1. The heat shrink tube will shrink and wrap the protected things tightly under high temperature. 2. Easy to install: Select the appropriate tube, put it on the wire joint and heat it to make it shrink with an air heater. 3. Flame retardant, insulated and heat resisting. 4. Come with a plastic storage box, convenient to carry and use. 5. Widely used in insulation protection of solder joints, inductors, prevention and protection of metal pipes and rods. Specification: Material: Polyolefin Box Size: approx. 13.5*7.0*3.0cm / 5.31*2.75*1.18in Voltage: Max. 600V Shrink Temperature: 138℃ Shrink Ratio: 2 : 1 Heat Shrink Tube: 3.2/1.6 (50pcs) (20mm long) Wire Terminal Size & Quantity: Red Transparent: 0.5-1.50mm2 (20pcs) Blue Transparent: 1.50-2.50mm2 (20pcs) Yellow Transparent: 4.00-6.00mm2 (5pcs) White Transparent: 0.25-0.35mm2 (5pcs) Weight: Approx. 72g / 2.5oz Packing list: 50 * Heat Shrink Tube 50 * Wire Terminal Note: Please allow slight error due to manual measurement. Thanks for your understanding. Package List