Helicoil 5521-5 Thread Repair Kit

Quickly and permanently restores stripped, worn or damaged threads to their original size and condition. Theinsert has a driving tang for installation which is notched for easy removal. Kit contains a Heli-Coil tap, installation tool, a quantity of inserts and detailed instructions, packaged in durable placon or vinyl pouches. Dimensions: 5/16″ x 18″.