New design with a dull polish finish and integral forming process for enhanced durability and aesthetic appeal. Compatible with Terra, DUO, or ART Quick Connect machines that use a TR21-4 soda machine connection. Also functions as a connector adapter for Terra DUO or ART machines to external tanks. Note: This item is not compatible with soda bottles in Australia and New Zealand. Product design may vary slightly between batches; minor color or dimensional differences may occur but do not affect performance. Material: Metal. Color as shown. Package includes: 1 x CO2 Quick Connector. No other items included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement tolerance: +/- 1-3 cm.