They all seem so similar, got this one: WADEO G1/2 CO2 Cartridges CGA320... https://www.amazon.com/dp/B08LP9PL3Q?ref=ppx_pop_mob_ap_share, thought it was an issue w/ the pin per another comment/question, returned/replaced quickly, great shipper, same problem…no fizz. Then ordered this one, which showed up today and having the same issue: 60 Inch Soda Club To External... https://www.amazon.com/dp/B089GWY9GY?ref=ppx_pop_mob_ap_share