Professional: Polished mirror finish, exquisite workmanship. For rusted nuts, you can use these tools to cut them off and then solve the disassembly challenge, this set of nut separators ensures you have the right tool for the job. PREMIUM QUALITY: Heavy-duty nut separators are designed to safely remove corroded or damaged nuts without damaging the bolt threads. EASY TO USE: Just turn the nut separator bolt to work on the target nut. Very easy to use. You can have a wrench ready to help you with this job. Application: Bearing steel material, high hardness, sharp cutting, anti-rust, long service life, very suitable for DIY use by mechanics and steel workers. FULL SPEC: Hardened steel chisels driven by large bolt capacities 9-12mm, 12-16mm, 16-22mm.