I wouldn’t recommend just getting the adapter alone unless you already have a pressure bleeder that can connect to it. If you don’t have any bleeders or adapters I would get this Brake fluid pressure bleeder with adapter: amzn.to/3yFk3Ol It comes with the bleeder and adapter as one unit. You will also need a container and some clear lines. All the tools I used are linked in the description 👍🏼