DescriptionThe item is a set of heat shrinkable tubings, which are made of durable material. Made of PVC, it is shrinkable and insulated, protects batterise from overheat and flames. With professional workmanship and durable to use, it is really a wonderful heat shrink tubings kit for choice.Features- Color: As shown.- Material: PVC.- Size : 20 x 10.5 x 3 cm.- Shrinkage ratio:48%.- Flat Diameter: 29.5mm (before shrinkage).- Wall thickness:0.1mm (before shrinkage).- Shrink Diameter: Approx.18.5mm.- Perfect for for Li-ion 18650 Battery.- This is a set of heat shrink tubing that can be used to protect batteries.- Excellent insulation performance. and flexible, low shrinkage temperature, fast shrinkage, anti-aging.