1、Restorer Tool: Ideal for repairing old, rusted nuts, bolts and screws with damaged threads as well as creating new threads. 2、Practical Use: Can be used on cast iron, steel, aluminium alloy, copper and many metal materials, also for car maintenance. 3、15Pcs in Pack: There are 7pcs thread tap, 7pcs thread die and 1pc thread file with various sizes, meeting your work needs. 4、Good Material: Made of high quality carbon steel material with high strength and hardness, rustproof and durable for using. 5、Easy Working: Hex design largely simplifies the operation with socket and wrench, while the box makes the carrying easier. 1 x 15Pcs Metric Thread Restorer Kit1 x Storage Box Item Type: Metric Thread Restorer7Pcs Metric Thread Die Size: M6- 1.00, M8- 1.25, M10- 1.25, M10- 1.50, M12- 1.25, M12- 1.50, M12- 1.757Pcs Metric Thread Tap Size: M6- 1.00, M8- 1.25, M10- 1.25, M10- 1.50, M12- 1.25, M12- 1.50, M12- 1.758 Pitches of the 1Pcs Metric Thread: 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.50, 3.00