High Quality: Locking wheel nut remover set with high power and impact resistance. Bolt nut extractor made from high-hardness chrome molybdenum steel. Reverse spiral flutes designed to bite for maximum gripping power. 3/8 inch square drive: Puller sets feature flat hex bits for use with end wrenches, pliers, adjustable wrenches, sockets, or Vise-Grip locking pliers. 3/8 inch square drive compatible with ratchet wrenches, impact wrenches, and air ratchets. Design: Spiral socket design allows secure connection on rounded fasteners for removal. Bolt nut extractors feature a black oxide surface for increased strength, durability, and corrosion resistance. Multifunctional: Twist socket set suitable for removing rusted, worn, or seized nuts and bolts without damaging paint. Provides maximum gripping power to easily remove broken, damaged, or rusted nuts, bolts, and screws. Package Included: Bolt removal tool kit includes metric and standard sizes: 1/4 inch, 5/16 inch (8mm), 3/8 inch, 10mm, 7/16 inch (11mm), 12mm, 1/2 inch, 13mm, 9/16 inch (14mm), 16mm, 17mm, 11/16 inch, 3/4 inch (19mm). Includes a durable carry case for convenient storage.