This metric rethreader kit, including 7 metric rethread dies, 7 metric rethread taps and 1 double-ended thread file, will be ideal for the quick repair of damaged threads on metric bolts & nuts. These rethread taps and dies are used to chase out damaged threads and remove nicks as well as burrs. The included thread file is ideal for quickly cleaning and repairing hard-to-reach external threads. Made of heavy-duty steel, this toolset is highly sturdy and durable. All pieces are neatly organised in a blow-moulded case.