Tornado Socket HTR405 TONE

It firmly bites and turns even if the hexagonal part of bolt/nut is severely rounded or rusted that it cannot be turned with socket or offset wrench.Dedicated for screws that loosen by right turn(left rotation only).Input Drive (mm):12.7Socket Contents:4TR-17, 19, 21, 22, 24Set Contents (piece):5Structural SteelSocket Holder (aluminum type)Compatible size depends on the level of wearing and condition. It needs to be matched against actual bolt/nut.