Specifications:This set consists of a pipe tap to clean and re-thread damaged or broken threads and a screw extractor to remove the rust, stuck, broken and damaged screws.Made from high quality steel material, this set features excellent rust and wear resistance for longer service life.It is easy to operate, which is a perfect helper for both beginning and experienced workers.Item Name: Repair Tap Extractor SetMaterial: SteelFeature: Durable, Easy to Use, Wide Application, Repair ToolBroken Screw Extractor Part:Screw Thread: 1 or 2inch: 10-19mm or 0.39"-0.75", 3 or 4inch: 16-24mm or 0.63"-0.94" (Approx.)Repair Length: 1 or 2inch: 46mm or 1.81", 3 or 4inch: 48mm or 1.89" (Approx.)Applicable Depth: 1 or 2inch: 25-35mm or 0.98"-1.38", 3 or 4inch: 35-45mm or 1.38"-1.77" (Approx.)Total Length: 1 or 2inch: 96mm or 3.78", 3 or 4inch: 102mm or 4.02" (Approx.)Thread Repair Tap Part:Screw Thread: 1 or 2inch: 22mm or 0.87", 3 or 4inch: 27mm or 1.06" (Approx.)Repair Length: 1 or 2inch: 34mm or 1.34", 3 or 4inch: 34mm or .34" (Approx.)Total Length: 1 or 2inch: 81mm or 3.19", 3 or 4inch: 86mm or 3.39" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Broken Screw Extractor1 x Thread Repair Tap