30Pcs Metric Thread Repair Insert Kit M5 M6 M8 M10 M12 M14 Helicoil Car Pro Coil Tool(M4 * 0.7)

Features:
The thread repair tool kit made from precision stainless steel wire for strength, wearproof and durability which can increase connection strength and fatigue resistance, the handle is made of high-quality rubber, ergonomically designed, non-slip and easy to grip, giving the hand a comfortable feeling.
With package case, each accessory has its place, for convenient store and carry, you can easy and fast to collect and take out.
This thread repair kit is to repair damaged or worn out threads, this kit helps create a stronger internal thread in soft metals and protects tapped threads against wear and damage, ideal for engine repair and other automotive applications.
Direct replacement and easy to install, perfect match, no need to cut and no more modification required.