Brand new Guitar Parts Zone Tune-o-matic bridge and tailpiece set with adjustable intonation screws in a chrome finish made of high quality die cast zinc alloy. Great set as an upgrade to an Epiphone, Les Paul, SG, Gibson style guitars or similar, replacement or a new guitar build project. Included is the bridge, 2 posts with thumb screws and 2 bushings (size 7mm or .275") and the tailpiece with height-adjustable threaded mounting studs and knurled bushings with 3-1/4" post spacing, stud diameter 1/2" or (12.00mm) . Great quality at a great price. Any questions please feel free to ask. Thanks for looking.. Bridge specs are as shown.