Bound Roasted Flame Maple Rosewood Deluxe Jazzmaster Neck. This is the exact neck you will receive. The frets have been leveled and dressed. Truss rod adjust at headstock. Shaft Wood: Roasted Maple. Right / Left Handed: Right-Handed. Neck Back Profile: Modern C. Tuner Hole Size: 10 mm. Fretboard Radius: 9.5. Number of Frets: 21. Neck Heel Shape: JM® Shape. Thickness at 1st fret: 21.5mm. Thickness at 12th fret: 23.0 mm.