The Hagstrom Jazz Model HL-550 Semi-Hollow Electric Guitar features a mahogany body and set mahogany neck. The Hagstrom patented H-Expander truss rod provides tension at either end and runs the entire length of the neck. The rigid yet lightweight alloy truss rod allows for very low action and a thin neck. Another Hagstrom exclusive, the resinator fretboard is an extraordinary, homogeneous wood composite that maintains a strong fundamental harmonic and eliminates wolf tones. It offers the articulate sound of high quality ebony but with more consistency and durability. Silky smooth, reliable and fast. A single floating custom HF-50 humbucker, combined with the resonant hollowbody, provide lots of warm, rich tone. The self-lubricating graphite composite nut is much harder than bone or plastic resulting in more string vibration through the neck. Tuning is also improved and string binding is eliminated by self-lubrication.