200Pcs Stainless Steel Helicoil Thread Repair Insert Kit M3 M4 M5 M6 M8 M10 M12. 【7 Size Assorted Helicoil kit】The kit contains 7 kinds of size: M3（50pcs, M4(40pcs), M5(30pcs), M6(30pcs), M8(20pcs), M10(20pcs), M12(10pcs).
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