Sizing Guidelines

Screw Extractor #1 - #3 = 1/8" Rescue Bit®
Screw Extractor #4 - #5 = 3/16" Rescue Bit®
Screw Extractor #6 - #7 = 1/4" Rescue Bit®
It is recommended that you use a Rescue Bit® that is smaller than the extractor you have broken off, at least half the size if possible.  
If you have any further questions regarding what size to use, please call us at
316-655-0401 or email us at rescuebit1@gmail.com