The Fender American Standard Series Jazz Bass has a vintage body radius and contour for a classic vibe and feel. The Jazz Bass's body is rendered in premium alder for optimum tone and sustain. Its rosewood or maple fretboard features detailed nut and fretwork. The neck is graphite-reinforced and has rolled edges for a broken-in feel from the get-go. HMV High Mass Vintage Bridge increases sustain, provides punchier tone, beefier looking plates and 38" diameter vintage saddles. String height adjustment screws have nylon patches for a tight fit that won't vibrate loose.A 12-gauge cold rolled steel plate machined brass backstop increases mass and enhances top end. Socket head intonation screws are engineered for a tighter fit, and are now more stable. The J Bass features Fender®Hipshot® tuning keys. They work great, and are 30% lighter, minimizing neck dip. Classic 201 tuning ratio, cast zinc with aluminum string posts and mounting nuts, and steel clovers. Brass worm gears, steel worm drives.With a thinner undercoat, the Fender Jazz Bass body breathes easier and has improved sound more wood influence. Neck pocket paint buildup has been reduced by 40%, greatly improving the wood-to-wood connectionreaction.The included SKB rectangular design case, exclusive to Fender, has TSA recognized and accepted locks. Fiberglass reinforced nylon trigger release latching system, indestructible cushioned rubber over-molded handle with flush lock out. Injection molded feet and exclusive arched stacking system.