User-Focused Design：Color-coded inserts and included installation tools simplify thread restoration for technicians. Product Details.
M4 x 0.7 Metric Thread Repair Kit Perma Coil 1221-304 Fit Heli 4MM USA w/Insert
M4 x 0.7 Thread Repair Kit Stainless Steel Helical Insert Helicoil + Drill + Tap
Durable Helicoil Thread Repair Kit - M4 x 0.7 with Compact Storage Solution
M18x1.5 Thread Repair Kit, 10 Pcs Helicoil Thread Repair Kit Thread Chaser Se...
5/16 18 Inch Thread Repair Kit HSS Drill Helicoil Repair Kit SAE Thread Inserts
10PCs Thread Repair Kit M18x1.5mm Stainless Steel Thread Repair Kit
