Size - 4mm. Pitch - 0.7mm;Complete thread repair solution for use in battery powered screwdriver drills and electric hand drills;All the tools have a 'quick change' 1/4 hexagon shank;Tap and drill manufactured from High Speed Steel. Inserts manufactured from aerospace specification stainless steel;Due to the narrow and exact tolerances, the newly repaired thread is usually stronger than the original thread

• V-Coil 4mm x 0.7 RAPID Thread Repair Kit with 1/4-inch Hexagon Shank

V-Coil 4mm x 0.7 RAPID Thread Repair Kit with 1/4-inch Hexagon ShankV-Coil