You must first have a piercing before you can undergo stretching. While piercing involves visiting a piercing shop and having your ear pierced once while you wait to heal, stretching can take a long time and requires specialized tools.
First, you’ll need tapers. Tapers are long tools that are placed in the piercing to stretch them. They come in different sizes and can stretch your piercing up to 10mm or more. They are also made using various materials, so ensure you are not allergic to any taper material you plan to use.
Secondly, you’ll need plugs. Plugs help you keep the stretching in place while preventing them from shrinking back to their standard size.
These tools listed above are specially made for stretching piercings and are more likely to give you the desired result.
Avoid using household items or objects like screws and pencils, as doing this will undoubtedly give you a bad result. They can also expose you to the risk of infections.