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, rust prevention and corrosion 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, rust prevention and corrosion protection of metal pipes and rods. Specification: Material: Polyolefin Box Size: approx. 13.5*7.0*3.0cm / 5.31*2.75*1.18in 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