Gold plated steel. Fits '50s-present four bolt Stratocaster, Telecaster, Jazzmaster, Jaguar Mustang, Electric XII, Precision Bass, Jazz Bass, etc. Complete with four gold plated oval head mounting screws. Great for general repairs to old or new Fender guitars and basses. No Serial Number. Works with nearly all 4-bolt mounting guitars and basses without Micro-Tilt™ adjustment (US and Mexico) manufactured by Fender from 1952-present. Brand New. Genuine Fender 0991447200. UPC 717669512897.