The 19 Pce | Alpha Damaged Nut and Bolt Extractor Set - 1/4in & 3/8in Drive Met/Imp combines 3/8in square-drive and 1/4in hex-shank extractors for rounded-off, rusted and painted-over bolts or nuts. The set includes fourteen 3/8in square-drive extractor sizes from 1/4in to 3/4in (19mm), plus five 1/4in hex-shank extractors in 5mm, 6mm, 5/16in (8mm), 10mm and 12mm. Reverse spiral flutes provide maximum gripping power, while forged SCM440 steel and black oxide finishing support durability. The use with impact wrench/driver, ratcheting wrench and flat wrench interfaces.

• 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.
• Dual drive formats: combine 3/8in square-drive sockets with 1/4in hex-shank extractors in one set.