Product Description: 1. Multi-Applacation: This M11x1.5 Head Bolt Thread Repair Kit is typically used for GM 4.0/4.2 liter engines, for Cadillac, for Honda, for Toyota and Other Imports. 2. Ultra Durability: CNC machined from quality heavy duty steel. Anodizing Process for a brigh & long-last finish to ensure great strength, wearing & corrosion resistace, deformation protection, satble performance and lifetime durability. 3. High Performance: This Head Bolt Thread Repair Kit is designed to help you remove the damaged threads that are stuck in a hole and replace them with new threads of the same diameter, so to improve connection conditions and enhance connection strength. .