The aluminum CO2 tank was purchased at a local welding supply shop. When it's empty you take it back to the shop to "swap it out," exchanging the empty tank for a full one. That's all there is to it.
- Price: $112 in 2001
- Capacity: 20 pounds (9 kg) of CO2
- Weight (full): 47 pounds (21 kg)
- Weight (empty): 27 pounds (12 kg)
- Height: 27.5 inches (70 cm)
- Diameter: 8 inches (20 cm)