Inline screw on adapter turns any G1/2-14 (.824 inch-14NGO) tank into an on/off. Fits standard valve threads on CO2 and tanks. Quick turn of the knurled twist ring disengages the pin depressor stopping the flow of gas. This on/off eliminates the need to remove your tank. Working pressure:Under 3000psi.<br><br>Input to Output:G1/2-14 threads. Note: Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: As Shown Material: Metal<br><br>Package Contents: 1 piece adapter<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.