Welcome to the Bunnings Workshop community @boney. It's sensational to have you join us, and many thanks for your question on replacing spindles.
You might like to read through this helpful guide: How to replace a tap washer. That will take you through the steps, but if you have further questions, please feel free to ask.
If the spindles need to be replaced, it's typically best to grab a basin tap set, which includes the new spindles. That way, the spindles and the handles are refreshed.
Mitchell
