131pc Professional Thread Repair Re-Thread Kit Restoring Damaged Metric M5-M12 110 Thread Helicoil Style Inserts, Drill, Tap, Insert tools for each size M5 M6 M8 M10 M12 Kit Includes: 5x Twist Drill Bits, 5x Break Pin Tools, 5x Installation Tools, 1x Hex Key Insert sizes: M5 x 0.8 x 6.7mm, M6 x 1.0 x 8.0mm, M8 x 1.25 x 10.8mm Insert sizes: M10 x 1.5 x 13.5mm, M12 x 1.75 x 16.3mm High Impact Metal Case, Kit Weight - 8 lbs