Specifications: Made of high quality glass material, it is durable, anti-rust and easy to use. It can be used for craft work, laboratory, chemical, biological, etc. Thick and non-slip design makes it wear-resistant, stable and safe. A variety of capacities can be selected to fully meet your needs. Item Name: Burner Empty Bottle Material: Glass Product Models: 30ml, 60ml, 150ml, 250ml Features: Durable, Easy to Use, with Plastic Cap Product Height: 70mm/2.76", 80mm/3.15", 105mm/4.13", 115mm/4.53" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes (Others Not Included): 1 x Empty Bottle 1 x Cotton Core Rope 1 x Plastic Cap 1 x Ceramic Lamp Core Holder