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- Repairs damage threads in spark plug ports
- For non-tapered seat ONLY
- Coiled inserts create a permanent and wear-resistant thread in the parent material
- All insert packs include 10 Inserts
- Pro-Thread Inserts (6 Pk) – M14-1.25
- 2 piece 1/2″, 2 piece 3/4″, 2 piece 3/8″
