Product Name:Refillable CO2 cartridge High quality stainless steel cylinders, Standard Pressure: 20MPA Special 12G /8g gas cylinder, which can be filled circularly Portable, mini and light Very strong sealing performance Compatible to PPS M700, CO2 SVD Gas/ Co2 Magazine , Tires, life jackets, bathing suits, air cushions Inflator Pump 12g CO2 Cartridges Mini Reusable Refill Gas Cylinder Capsule Airsoft Shooting Adapter Adjustable Scale Display -- The Tactical Refillable 12g CO2/Green Gas Cartridge is an economical alternative for all CO2 powered airsoft pistols. -- The reusable CO2-styled cartridge can be refilled with either green gas or CO2, allowing airsoft guns that have too high of a FPS rating to be brought down with green gas. -- It can also be refilled with a bulk supply of CO2 (e.g., refillable CO2 tanks), saving on the expense of disposable individual cartridges. -- Made out of high impact grade aluminum, this CO2 cartridge will preform its best through each can of green gas or CO2. Product Two: Name: CO2 Refillable Needle Charger Adapter Material: Aluminum alloy Max Pressure Resistance: 20MPA Color: Blue -- Qucick and easy way to recharger you 12g/8g refillable co2 cylinder with this adapter. -- Attach to any size tank and you are ready to recharge your refillable 12g co2 cylinders