Double head screw extractor allows for easy removal of broken screws and bolts.
Choose a remover that is smaller than the screw diameter. Then reverse drill with a small tip in the worn screw head, drill small holes as deep as possible. Then mount the large end of the extractor bit on the drill. Rotate counterclockwise (Reverse) to remove the screws.
The drill speed should be slow, not too fast or suddenly accelerated, the whole operation needs to be reverse operation, first use small end of the bit to drill, then use the large end to remove the broken screw.
