construction Stripped bolt and nut remover set is made from hardness steel for strength and durability. The reverse spiral flutes are designed to bite down into stripped or damaged bolts for effective removal. Five sizes in one set This 5piece bolt and nut remover kit includes clearly readable size markings for 17 mm, 19 mm, 21 mm, 22 mm, and 12 mm. The range of sizes lets you tackle a wide variety of bolt and nut removal tasks with flexibility across different projects. Universal drive for easy use Standard 1/2 inch square drive is compatible with hand ratchets, impact wrenches, and air ratchets, making it a versatile tool for both DIY and professional work. Safe storage and portability The 5piece kit comes packed in a storage box, keeping your tools organized and easily accessible. Its compact design allows you to carry the set anywhere, whether you're in your garage or at a job site. Use scenarios Removing a stripped or damaged bolt in car or motorcycle maintenance when standard tools fail. Servicing machinery or equipment where seized bolts are difficult to remove in tight spaces. Disassembling bikes, furniture, or other assemblies where bolts have become rounded or damaged.