131Pcs HSS Thread Repair Kit Drill Helicoil Metric Set Heli Coil Tap Insert Case

Quantity: 131PCS. Place the insert on the assembly tool and position the adjustable ring so the insert blade is in the center of the tenon slot. Using gentle pressure, rotate the insert down until it is half a turn below the surface.Do not work against the direction of the thread, as the tang may break;.

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