V-Coil 4012 Thread Repair Kit, Multi-Colour, Size M8 x 1.25mm. STI Twist drill: Ø 8.3 mm. Size: M8 x 1.25 mm. For thread cutting by hand. Thread repair of damaged or worn-out threads. Made by the German manufacturer of wire inserts, V-Coil. Supplied with twice as many inserts as other brands. V-Coil wire thread inserts manufactured from aerospace specification stainless steel. Heat and corrosion resistant. Supplied in a convenient plastic case to keep all the parts together. Sets in sizes up to M12 come with a matching drill bit. Includes: 1 x V-Coil tap, 1 x V-Coil drill, 1 x V-Coil installation tool, 1 x V-Coil tang break tool, 20 x V-Coil wire thread inserts 1.5D length. Thread Size: M8 x 1.25mm. Drill Supplied: 8.3mm. Insert Tool Supplied: No11. Tang Removal Tool Size: No11. Inserts supplied per kit: 20 x 1.5 of the diameter in length. A complete thread repair kit - including the required drill.