【50-PIECE MULTIFUNCTIONAL EXTRACTORS SET】: This is a set of 4-in-1 screw & nut remover kit and drill bit kit.It contains 13pcs multi-spline screw extractors, 16pcs left hand HSS drill bits, 6pcs spiral screw extractors,13pcs nut removers,1pcs extension bar and 1pcs ratchet wrench.Multiple specifications and sizes to meet your various work needs. 【HIGH QUALITY HSS & CR-MOl】: The drill bits of this extractor set are made of high speed steel. The screw and nut extractor kit is made of chrome molybdenum steel. These two excellent materials are harder and tougher and can be used for a variety of metal fasteners. The reverse spiral groove design bends downward to provide maximum grip. 【HIGH CARBON STEEL DRILL BITS】: 135° angle design of the head for easier access to fasteners and improved efficiency.High speed steel, strong than cobalt bits and not easy to wear. Surface titanium nitride coating, effective anti-corrosion and anti-rust, prolong the service life. 【CR-MO NUT REMOVERS】: All premium industrial grade bolt extractors are tightly designed. Grip firmly, not easy to fall off, provide more torque. Easily remove damaged bolts, nuts and screws even if they are stripped, rusted or frozen. Made of high hardness chrome molybdenum steel for durability. 【WIDELY USED】: This screw remover set contains 50 models of parts, each with clear specifications printed on the part. Including SAE sizes, such as: 1/8",5/16",3/8",7/16",1/4",1/2", etc. Suitable for power drills, flat or allen wrenches, tap adapters. Ideal for removing broken screws, bolts, studs, fittings, threaded pipes and pins.
