What is this? - Bidirectional adjustment rod to regulate the guitar neck - Allows adjusting the guitar neck up and down, left and right What will I receive? - Color: Blue - Total size: 380 x 6 x 8mm - Hexagonal inner diameter: 4mm - Includes 1 Bidirectional rod and 1 Adjustment key What advantages does the product have? - Made with high-quality metal components - Consistent and durable welding joints - Necessary tool for guitar maintenance How to use? - Remember "Right to tighten, left to loosen" to use the 2-way guitar rod What should I note? - Check compatibility before purchasing