[Specifications and packaging]: 110pcs wire thread inserts: 25xM5, 25xM6, 25xM8, 25xM10, 10xM12. 5pcs twist drill bit, 5pcs break pin tool, 5pcs installation tool, 5pcs tap, 1pc hex key.[Function]: Metric thread repair tool kit for repairing damaged or stripped internal threads in automobiles and engines.[Material]: The installation tools take classic high speed steel construction, is robust and provides an efficient thread repair job.[Advantage]: Repair kit takes the most commonly used metric size bits and match the mounting job with good maneuverability to get your job done quickly and swiftly.[Quick Replacement, Safe Installation]: All components are packaged in a steel carrying case for quick and easy storage and removal.