Check the listing for details. 11pcs 3/8” Dr. DuoMetrix Impact Round Bolt Screw Nut Extractor Remove Set. Condition: New. Listed at 36.99 USD. Brand new 11pcs Rounded Bolt Remover, Extractor Socket Set for Removing Damaged, Frozen, Rusted, Rounded-Off Bolts, Nuts & Screws This bolt extractor set covers the most commonly used and requested standard (SAE) and metric (mm) sizes, allowing you to easily extract nuts, bolts & screws that are rusted, worn, painted over, or even completely stripped or broken. Designed for Tight Space this nut extractor socket set has a longer and slimmer profile. This particular design of extractor is well-suited to tight access, compensating for the shortcomings of traditional hex extractors. The internal thread of thinkpro upgrade bolt extractor with reverse spiral flutes has a good grip on the bolt, providing excellent torque; the more you turn, the tighter the socket grips. Convenient to use comes with standard 3/8" square drive head and 1/4” hex quick adapters allowing you to use your preferred hand, air, or power tool. It also comes with a knock-out pin for easy removal. Each strip bolt remover socket set is manufactured from high-hardness CR-MO steel for superior durability and lifespan and is stored in a heavy-duty case with clear laser-etched dimensions for easy carrying and identification. Material cr-mo Drive size 3/8” Length 65mm Size included: 1/4” (6mm) 5/16” (8mm) 3/8” 7/16” (11mm) 1/2” 9/16” (14mm) 5/8” (16mm) 11/16” 3/4” (19mm) 1/4” hex quick adapter Knock out pin