If this attaches to a sink, why do I need H/C hoses? I don't, correct?

Hello, thank you very much for your question. This washer requires a 3/4'' hose to connect to the faucet for the water to come out. The hose will be included in the package. Here is our after-sales email address (sales4@gzmairui.com), if you have any questions after purchasing the product, please feel free to contact us, thank you!