The CENTURY DRILL 73414 Spiral Flute Screw Extractor Set is a must-have for anyone tackling damaged fastening tasks. This 6-piece set includes #1 to #6 spiral flute screw extractors designed to remove 3/32" to 7/8" bolts or screws. With its innovative spiral flute design, this set provides up to two times more gripping power than other extractor sets.