This product is a heat shrink tubing. It is made of solid materials. It is safe and . It can serve you for a long time without being easily damaged. It is an excellent heat shrink tubing that can bring you convenience, allowing you to have comfortable experience. Features -Color: Black -Material: PE/XLPE -Size: 4.00X0.20X0.20cm/1.57X0.08X0.08in - Made of premium PE and XLPE material, and insulated, to use. - Used in wiring, automotive and many other electronic and electrical applications. - With these heat shrink tubing kit, you will become more confident in your soldering work. - Adhesive will come out and seal the connection when heating, creating waterproof and long-lasting insulation. - Excellent craft, carefully down to every detail to give it and beautiful look. Package list: 720 x heat shrink tubings