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: 1/2inch: 10-19mm/0.39"-0.75", 3/4inch: 16-24mm/0.63"-0.94" (Approx.)Repair Length: 1/2inch: 46mm/1.81", 3/4inch: 48mm/1.89" (Approx.)Applicable Depth: 1/2inch: 25-35mm/0.98"-1.38", 3/4inch: 35-45mm/1.38"-1.77" (Approx.)Total Length: 1/2inch: 96mm/3.78", 3/4inch: 102mm/4.02" (Approx.)Thread Repair Tap Part:Screw Thread: 1/2inch: 22mm/0.87", 3/4inch: 27mm/1.06" (Approx.)Repair Length: 1/2inch: 34mm/1.34", 3/4inch: 34mm/.34" (Approx.)Total Length: 1/2inch: 81mm/3.19", 3/4inch: 86mm/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"