Features 1、‌40Cr: These screw and nut extractors are made of excellent ‌40Cr and quenched at high temperatures to ensure high hardness, no slipping, no fracture, and extended service life. 2、Spiral Pattern: With deep spiral twisted pattern design, these extractors are specifically designed to solve rusted hex screws, easily penetrating the rust layer and increasing grip, making disassembly easy. 3、Good Adaptability: These nut extractors have a multi shaped opening design, making them suitable for a variety of tools such as cross wrenches, open end wrenches, pneumatic wrenches, and damaged nuts. 4、Kit Specifications: This kit provides 6pcs spiral groove extractors, 13pcs multi spline extractors, 6pcs bolt extractors, and a left hand drill bit to meet your various fastener disassembly and removal needs. 5、Wide Application: This bolt and nut extractor set is suitable for roof maintenance, repair workshops, machinery workshops, tire maintenance, and other scenarios, with a wide range of applications. Specification Item Type: Screw Nut Extractor Set Material: ‌40Cr Specification: 26 Pieces Package List 6 x Spiral Flute Extractor 13 x Multi Spline Extractor 6 x Bolt Extractor 1 x Left Hand Drill Bit 1 x Plastic Box