Sorkin (bowtie) bridge assembly, polished aluminium Genuine Bigsby parts –; for pure Bigsby sound, feel and performance. Bigsby offers a wide selection of parts for players looking to restore or upgrade their vintage or contemporary instruments. A polished aluminum bridge and saddle with height adjustment that was used on some early Premier®; and Rickenbacker®; models. Polished aluminum bridge base and saddle Saddle is compensated for wound G string String spacing is 2-3/64&;quot; Post spacing is 2-13/16&;quot; 12&;quot; radius saddle (unslotted)