Description: This product is made of high strength, glass-reinforced nylon with brass valve internals, durable. This pocket-sized CO2 charger is the ideal tool for any home brewer using Cornelius kegs. This keg charger fits in your pocket and eliminates the need of cumbersome and costly CO2 tanks, regulators and hoses. Easy to use. Press the trigger to release CO2 into the keg or release trigger to stop flow. It is used to keep dispensing pressure in your keg when you are away from home. Worth buying. Specification: Condition: 100% Brand New Material: Plastic + Brass Color: Black, Grey, Yellow(optional) Product Size: Approx. 13 * 10 * 5.5mm / 5.1 x 4 x 2.2inch Product Weight: Approx. 100g Package Included: 1 X Keg Charger 1 X Ball Lock Note: 1. Please allow 0.5-1cm errors due to manual measurement. 2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. 3. This product is connected with 16g gas tank.