Where do you get a 9oz co2 refill in santa monica?

In Santa Monica, you can get a 9oz CO2 refill at local sporting goods stores, specialty beverage shops, or home brewing supply stores. Additionally, some gas supply companies and welding supply stores may offer CO2 refills. It's a good idea to call ahead to ensure they have the specific size you need in stock. You can also check online for nearby locations that provide this service.