Check the listing for details. 25099 Pro Thread Inserts - MTC M9-1.25. Condition: New. Listed at 9.97 USD. CLICK HERE TO VIEW PRO THREAD FLYER ΓÇó Includes 10 inserts: 1.5D, 13.5mm ΓÇó Use with CTA Kit #35099 PRO-THREAD FEATURES: ΓÇó Pro-Thread Kits offer a cost effective method of repairing and strengthening threads in various materials such as cast iron, steel, aluminum, and other metals and plastics ΓÇó Effective for automotive repair, spark plug ports, outdoor power equipment, motorcycle repairs, farm equipment, and more! ΓÇó Easy to install, just DRILL, TAP, INSERT, SNAP! ΓÇó Pro-Thread inserts provide a permanent wear resistant internal thread ΓÇó Stainless steel inserts resist the effects of temperature and corrosion ΓÇó Wire inserts help to compensate for the thread and pitch angle errors ΓÇó Repaired threads are generally stronger than the original parent material thread