Regulators w/Hoses are a complete setup that you need to have in case you are not being able to install two separate items together.
Your regulator may not fit into any other hose. Choosing a regulator with hoses will always help you to connect to a propane tank.
Last update on 2022-01-26 / Affiliate links / Images from Amazon Product Advertising API

I am Richard A. Jackson man behind propane heating solution, An HVAC expert working as a team lead of the heating department, Provide services all over the USA (around all major cities), and from planning to implementation, you will get all your solution here. We provide various tanks (propane and other natural gases) and deal with disposable waste.