CAMTOA Mini Tobacco Electric Cigarette Injector Roller Maker Rolling Machine Trendy designs, Dimension 6" x 2.5" x 2.5", Diameter of cigarette tube: 8 mm The product has the power adapter, input volage : 110-240V AC 50-60Hz,output:7.5V DC Everyone could be the great cigarette operators. You can make your own filtered cigarette in seconds. Do not let the machine into the water or a wet cloth to clean.