Specially designed twisted grooves allow deeper penetration into damaged nuts for enhanced grip and clogging Precise electroplating surface provides excellent rust and rust resistance for all environments Made of heat-treated alloy to resist abrasion and extend service life in professional repair scenarios It features a standard 1/2" drive interface for ratchets, electric drills and torque wrenches to integrate versatile tools Unique reverse thread pattern ensures a secure hold of rusted nuts and slides for efficient removal, Manufacturer: sheQImaoYI