Amazon.com: IRWIN Tools IMPACT Performance Series BOLT GRIP Deep Well Bolt Extractors, 3/8-inch Square Drive, 6-Piece Set with 1/4-inch Hex Drive to 3/8-inch Square Socket Adapter (1859143) : Tools & Home Improvement
Irwin 53905 Bolt Extractor, for 7/16" or 11mm Bolts, Reverse Spiral Flutes, 3/8" Drive, Bulk | JB Tools