TRINITY Stainless Steel Adapter for CO2 Paintball Tanks, Can Be Use On Soda MAKER Beverage Machine. Fast 1-3 Days Shipping with Tracking Number. Brand New. No Hassle Return Policy. Buy with Confidence from Authorized Dealer. Average co2 refill in paintball stores or sporting goods store is from $ 4.00 to $5.00 Easy to use- Easy to install-VIDEO AVAILABLE. Save Money On Refills. Stainless Steel, No tools required, the unit comes ready to use.