Helicoil 5521-4 1/4-20 Inch Coarse Thread Repair Kit

Helicoil Inch Coarse Thread Repair Kit includes inserts, detailed instructions, Heli-Coil tap and installation tool. It is made from high quality material and is extremely long lasting. This inch coarse thread repair kit is used for repairing tapped holes which have been stripped or damaged, due to wear, corrosion and over torque. It comes with a package type of durable placon or vinyl pouches. Thread Size 1/4-20 x.375 Length. Heli-Coil inserts are precision formed coils of extremely hard stainless steel.