This is a genuine Fender replacement Jazz Bass neck built of roasted maple. Featuring a comfortable "Flat Oval"-shaped profile and 12"-radius maple fingerboard with 20 jumbo frets, this neck was designed for pure speed and comfort. Upgraded features include a satin urethane finish and rolled fingerboard edges for supreme comfort and a broken in feel. Because Fender genuine replacement necks have not been mounted to guitar bodies, nut slots must be cut by qualified personnel. Other installation processes may be required, such as fret work, fitting the neck to the neck pocket, and other instrument setup procedures.