TonePros TPFG N - Metric Tune-O-Matic Bridge with 'G Formula' Saddles (Large Posts / Notched Saddles),Tune-O-Matic bridge for electric guitars, retrofits most guitars with metric hardware without modification, special designed 'G Formula' saddles based on the original vintage Nylon 66 saddle material, saddles retain the tone of the original Nylon 66 saddles, but add other hi-tech ingredients that provide a new 'slippery' surface that prevents string breakage and provides superior durability, intonation adjustment with flathead screwdriver on the pickup side, allows precise adjustment of the string height and scale through lockable saddles, large posts, pre-notched saddles for quick installation, metric threaded inserts, 73.8 mm (2.905"") post distance, 51.5 mm (2.027"") string spacing, incl. hex key, nickel finish