50ml Portable Aluminum Alloy Alcohol Lamp, Wick - Laborotary Heating Teaching. FEATURES: Bottle with Silicone Seal.for a Long Time to Carry Do Not Leak. Shorten the Wick, Adjustable for Small Fire, About 4 Hours Burning Time(Full Alcohol) Elongation the Wick, Adjustable for Big Fire, About 2 Hours Burning Time(Full Alcohol) SPECIFICATIONS: Name: Alcohol Lamp Material: Aluminum Alloy Wick Material: Cotton Size: 8.2cm X 3.9cm X 2.2cm (approx) Wick Size: About 15cm(approx) Capacity: 50ML Usage: Heat Conduction Demonstration PACKAGE: 1Pc X Alcohol Lamp(Alcohol Not Include) Or 20Pcs X Alcohol Lamp Wick . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.