Irwin 1859144 Bolt-Grip 4pc Impact Deep Well Extractor Set

• 1/4", 5/16", 3/8"
• 3/8" Square, 1/4" Hex
• Grips and removes damaged nuts, bolts, and screws
• Easy to use
• Engineered with reverse spiral flutes and extended reach to fit over exposed studs and easily grip and remove recessed fasteners including broken, damaged, or rusted nuts, bolts, and screws
• High carbon steel ensures longer life and greater durability 
• Universal lobular design fits all types of fasteners 
• Black oxide finish resists corrosion and increases life of extractor
• Made in U.S.A.