Graph Tech's String Saver Saddles are aftermarket replacements designed for post-2000 Gibson-style Tune-O-Matic bridges. Crafted from a special high-density polymer, they aim to reduce string breakage, enhance sustain, and improve tuning stability. Infused with Teflon for lubrication, they minimize friction, potentially extending string life. These saddles are touted to offer better tone transfer and string stability compared to traditional materials like metal or bone.