The 6pce | Alpha Damaged Nut & Bolt Extractor Set | 1/4in & 3/8in Drive Met/Imp is designed for removing rounded-off, rusted and painted-over bolts or nuts. The extractor sizes are 5/16in (8mm), 10mm, 12mm, 13mm and 9/16 in (14mm), with a 3/8in to 1/4in hex impact socket adaptor included. Reverse spiral flutes provide maximum gripping power, while forged SCM440 steel and a black oxide finish support durability and corrosion prevention. Square drive and hex flats allow use with impact wrenches/drivers, ratcheting wrenches and flat wrenches.

• Set covers: 8mm-14mm Metric and 5/16in-9/16in Imperial equivilant Extractors.
• SCM440 steel: provides increased durability.
• Reverse spiral flutes: provide maximum gripping power on damaged fasteners.
• Black oxide finish: helps prevent corrosion and increases durability.
• Forged construction: is forged rather than cast.
• Square drive & hex flats: support use with wrench and socket options.
• Included 3/8in to 1/4in hex impact socket adaptor.