Great Whip Cream chargers 8G for Cream Dispenser 

https://grtsupply.com/product/greatwhip-whipped-cream-charger-600-pcs-whip-cream-charger-nitrous-oxide-cream-chargers-8-gram-600-packs/

8G canister whipped cream, which is the most common on the market now, is very popular in the United Kingdom, the United States, Europe, etc. which for the production of coffee and cakes.

YouTube Video: https://youtu.be/P0yUK2gskWg