1Application: For damaged bolt remover or seized bolt, and for 519mm studs from engine blocks, exhaust manifolds, cylinder heads, and other applications. 2High Efficiency: The multipurpose stud extractor can quickly and efficiently complete the bolt removal work, and easily solve the difficult problems in repair and maintenance. Save time and effort. 3Sturdy Material: Made of durable and strong steel, this stud extractor tool ensures long lasting performance and reliable removal of broken bolts or seized studs. 4Wide Diameter Range: Fit for stud diameters from 5 to 19mm, this stud extractor can handle bolts and studs of various sizes, making it suitable for a wide range of applications. 5Easy to Use: Designed for ease of use, this stud remover tool requires minimal effort to operate and effectively removes broken bolts or seized studs without causing damage to surrounding parts.