There are several benefits to using a screw remover kit.
The most straightforward reason to use these tools is their convenience in the event of stripped, rusted, or broken bolts. Damaged screws should be replaced, and extractors are designed to provide a quick and easy solution to this problem.
Using an extractor allows you the advantage of not having to make a bigger hole in the workpiece. This means that it can retain the same size screw in the existing hole, making for a neater, cleaner finish once the problematic screw has been successfully removed.
One of the main reasons to use a bolt extractor is if the integrity of the pre-existing thread needs to be kept intact in the workpiece. This is often the case because it then allows you to replace the bolt with the same thread size. This prevents the need to drill the hole and subsequently repair it to the original thread size.