The US PRO 5pc Stud & Screw Extractor Set is an essential tool for removing damaged studs and screws ranging from 3mm to 18mm in diameter. Made from high-quality hardened, heat-treated steel, these extractors are designed for durability and strength, providing reliable performance in a variety of tasks. Features : Manufactured from hardened, heat-treated steel for added strength and long-lasting use. Bites easily into standard bolts and screws , ensuring a secure grip for removal. Compatible with spanners, sockets, or tap holders for flexible use. Specifications : Shank type : Hex. Suitable for removing studs and screws with diameters from 3mm to 18mm. Sizes : 4mm, 4.5mm, 6.4mm, 7.6mm, 11mm. Supplied in a convenient plastic storage case . Brand : US PRO