For those who use these little cartridges, you know how quickly the price can add up. [steve] takes us through the process of adding a valve to a spent cartridge so it can be refilled.

12-GRAM CO2 POWERLETS - Compatible with most air rifles and air pistols SNUG FIT, SOLID SEAL - For reliable and consistent performance 5-COUNT BOX - Ideal for the air gun target sport enthusiast ...

A tight seal and a small CO2 cartridge turn boring, still water into something a little more exciting. You can screw the top on a water bottle Roam sells itself or on a compatible water bottle ...

W hen the water went into the bottle, it was flat, tasting like boring old tap water. When it came out of the water bottle, it sparkled. Not in that highly carbonated, almost spic ...