Refillable High-Pressure Steel Design - Made from durable steel with precision threading to withstand repeated refills, offering a long-lasting alternative to single-use CO₂ cartridges while maintaining consistent pressure output. Fits Standard 8g and 12g Systems - Compatible with most devices that accept common 8g or 12g CO₂ capsules, including airsoft blowback pistols, markers, soda siphons, and bike inflators-always verify thread compatibility before use. Multi-Use Across Sports, Home & Outdoor - Works reliably for carbonating beverages, powering gas blowback BB guns, inflating bicycle tires in emergencies, or operating compact air tools-ideal for camping, training, commuting, or DIY projects. Leak-Resistant Seal for Safe Operation - Features a tightly machined valve interface that minimizes gas loss during connection and discharge, enhancing efficiency and safety during filling or use. Compact and Travel-Friendly - Small enough to carry in a pocket, tool pouch, or gear bag, making it a convenient on-the-go solution for cyclists, outdoor enthusiasts, home bartenders, and tactical hobbyists alike. Color: As Shown Material: Stainless Steel Package Contents: 1*Steel Capsule Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.