Screw extractors can become damaged easily; they can bend, snap or wear after constant use. Maintaining extractors will help make sure they last.
Use
Use extractors only for their intended purpose and make sure to use the guide supplied with the extractor to find out which screws or bolts that particular extractor can remove. Excess force or uneven pressure when using the extractor can cause snapping, bending or damage.
Cleaning
After each use, remember to wipe down the extractor to remove any shavings or material that is attached. This will prevent the flutes from becoming clogged and unable to grip the fastener.
Storage
Store your extractors in the case in which they were supplied or in a similar safe place.
Damage
Screw extractors will wear after being used a numerous amount of times, so they will have to be replaced eventually.