Description:Airsoft BB Magazine Refill Charger Adapter 12g Co2 Cartridge Charging Adaptor Item Specifics:- Application: To fill Airsoft GBB Magazines.- Capacity: One 12g Co2 cylinder.- Compatibility: Works with most Airsoft gas blowback magazines that can use CO2.- Material: Steel, Aluminum.- Length: 15.3cm.- Weight: 115g.- Color: Blue. Features:- CNC aluminum construction is designed to withstand the high pressure that comes with using CO2.- Perfect for charging most GBB magazines on the go.- Small enough to fit in most small pouches, allows you to have extra CO2 on the field.- Easy to use and replace 12g CO2 cartridges.- Durable anodized blue  Steps for usage:- 1: Remove the device and 12 grams of toothless high pressure small gas cylinders.- 2: Loosen the nut at the bottom of the unit, insert 12 grams of toothless cylinders, tighten the nut to the top of the cylinder.- 3: press the needle front gas nozzle, gas nozzle can begin to inflate.  Package Contents:1 X Airsoft 12g CO2 Cylinder Refill Charger Adaptor