The Maximun Impact Bolt Remover/Extrator: Set is the perfect toolkit for removing stripped, rounded off, painted over and rusted bolts & nuts. Multi-Function:3/8 inch impact-rated square drive, which can be used with air ratchets, impact wrenches, and hand ratchets; also has hexagonal flats for use with flat wrench, pliers, adjustable wrench, sockets or VISE-GRIP locking pliers. High-Quality Constraction:from impact rated 6-point high carbon steel (chrome-molybdenum steel), which provides superior durability, corrosion resistance & maximum gripping power. Plus the bonus of etched markings on all sockets for easy visibility. Wide Variety of Sockets for All Kinds of Jobs:10 socket sizes make this the perfect tool kit for all kinds of job applications. Sockets work on SAE sizes - 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, 5/8 inch, 11/16 inch, and 3/4 inch. Sockets work on Metric sizes - 8mm, 10mm, 11mm, 12mm, 13mm, 14mm, 16mm, 17mm, and 19mm. Colour:black Material:Chrome vanadium steel Package Contents: 10 * Nut Bolt Remover(High-style aluminum box, the color of the foam pad is random, and the specified color is not accepted) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.