Available sizes and cutting options - Widths: 0.9 cm, 1.1 cm, 1.3 cm, and 2.5 cm per roll. The product can be cut to the exact length you need, making it a practical alternative to traditional oil lamps or lanterns. Cotton oil lamp core features - Material and performance: solid flat cotton core designed to deliver bright flames, even combustion, safe use, light weight, and long service life. Compatibility and usage - Suitable for many lantern types: works with a wide range of lanterns to help you maintain a consistent look and ambiance. Size and burn time - Length: 20 cm per piece. Typical burn life is 7-14 days, depending on usage. Use scenarios - Home ambience: use in decorative lanterns to create a calm, peaceful evening environment in living rooms or patios. - Outdoor and camping: compatible with portable lanterns for reliable, steady lighting during outdoor activities. - Emergency lighting: suitable as a ready-to-use core in lanterns during power outages, providing safe, controllable light when needed.