30pcs thread repair kit including 25pcs M5 Helicoil Inserts and other installation tools. Thread inserts are made of stainless steel, wear resistance and corrosion protection. 5.2mm drill bit and M5 x 0.8mm tap is make of HSS, high hardness. Suitable for restoring damaged threads. Easy to install: 1.Drilling; 2.Tapping; 3.Installing the insert; 4.Breaking off the mounting handle.
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