6 Spiral Flute Extractors - For use on common fasteners where lower torque is adequate|13 Multi-Spline Extractors - For use when higher torque or a lower profile tool is needed|13 Bolt Extractors - For use when part of the fastener is exposed|16 Left-Hand Cobalt Drill Bits - Use these to drill out the interior of the fastener|They often extract the fastener by themselves