WD® Licensed By Fender® Replacement 20 Fret Neck For Jazz Bass®Replacement Jazz Bass® neck 12 radius, double action truss rod, 1 1/2 in. nut, clear satin finish. 20 fret. Nut not included. All necks require a final level, crown, and polish and may need to be fine-tuned to your instrument and playing preferences. Your new neck should be carefully inspected prior to installation and/or modification as necks are rendered non-returnable once altered. Due to the organic nature of wood each neck is considered unique and may have minor variations in grain or finish from those pictured. WD does not sell what is commonly referred to as seconds or blems. Due to the volume of necks that we sell WD does not hand-select necks based on appearance or weight. WD neck heels are made to Fender USA dimensions and tolerance, this may not account for neck pocket shrinkage or expansion over time. Some neck pocket modification may be required. WD recommends that if you are not familiar with replacement neck installation that you contact a qualified luthier or repair shop.