1、 Complete specifications, suitable for a variety of wire joints. 2、 Mainly used for insulation protection of wire core, solder joints, inductors, also for rust prevention and corrosion protection of metal pipes. 3、 The heat shrink tube would shrink and wrap the protected things tightly if heated under high temperature. 4、 Easy to use - select the appropriate tube, put it on the wire joint and heat it to make it shrink with an air heater. 5、 Flame retardant, heat insulation, with good sealing ability. Features:  1. Complete specifications, suitable for a variety of wire joints. 2. Mainly used for insulation protection of wire core, solder joints, inductors, also for rust prevention and corrosion protection of metal pipes. 3. The heat shrink tube would shrink and wrap the protected things tightly if heated under high temperature. 4. Easy to use - select the appropriate tube, put it on the wire joint and heat it to make it shrink with an air heater. 5. Flame retardant, heat insulation, with good sealing ability.   Specification: Material: PE Color: Shown as picture Quantity: 328pcs, 164pcs (Optional)   Package list: 328pcs Heat Shrink Tube: 120pcs 1.0x40mm 60pcs 2.0x40mm 40pcs 3.0x40mm 32pcs 4.0x40mm 24pcs 6.0x40mm 20pcs 8.0x80mm 16pcs 10.0x80mm 16pcs 14.0x80mm   164pcs Heat Shrink Tube: 60pcs 1.0x40mm 30pcs 2.0x40mm 20pcs 3.0x40mm 16pcs 4.0x40mm 12pcs 6.0x40mm 10pcs 8.0x80mm 8pcs 10.0x80mm 8pcs 14.0x80mm