It is guaranteed for life to the original purchaser. If the wood, truss rod, glue joints, dots, or side markers ever fail, return the neck to me and I will either repair it or give you a new one. I do not guarantee fret, fretboard or finish wear. These happen with use and are expected. The stainless steel frets we provide will last a long, long time. Let me know when you wear them out! If the neck is finished with Tru-Oil it will wear a bit over time and you should occasionally touch it up. I do not cover abuse like broken head stocks or jammed and stripped truss rod nuts. There is no reason, other than from misuse or neglect, that any of these two would ever happen with a responsible owner.