Tianya Maple Bass Neck 4 String 21 Frets Rosewood Fingerboard for Jazz Bass JB PB Style Bass Neck: Maple Material(maybe some grain of the maple neck) Side Dots: White inlay with White ABS dot The neck where it meets the body is approx. 64.5mm wide, and 21.5mm thick. And the whole bottom part of the neck including the rosewood fingerboard is approx. 27.6mm thick There is Rosewood Back Rid at the back of the neck, which can be strength the neck and making the neck not easy to curve [Package Include]: 1 x Bass Neck