Our cylinder tanks are DOT-APPROVED 4BA-240 cylinders. Each cylinder is equipped with an internal liquid siphon dip tube with 1 liquid port. The size and type of the valve connections are CGA 510 fittings. We Sell the adapter to convert this tank to a male 1/4″ SAE Fitting. Click here for CGA 510 Adapter
These cylinder tanks are refillable and are part of our EZ Exchange Program.