Graph Tech String Saver Saddles PRS (PQ-8220-00) are superior replacement saddles for Paul Reed Smith guitars. The guitar saddles are made with a unique combination of materials that enhance tone and dramatically reduce string breakage.How do they work? A string rests on a metal saddle that binds and locks the string in place. As the string vibrates, it is stressed on a very specific point producing metal fatigue and then string breakage. Each String Saver guitar saddle is impregnated with Teflon, the slipperiest substance on earth. The Teflon in String Savers eases the grip between the saddle and string, spreading the stress over a greater portion of the string, just enough to drastically reduce string breakage. Teflon is 500% more slippery than graphite and is impregnated throughout the String Saver material, so its lubricating properties will never wear out. Use the Graph Tech PRS guitar saddle and experience strings that last and last, no matter how hard you play&hellipGraph Tech guarantees it!What do they sound like? Metal saddles have a pronounced 2 KHz treble spike that dominates the tonal spectrum. String Saver guitar saddles have a more balanced tone, with highs, mids and big open lows. You will also notice an increase in sustain by up to 25% over brass saddles and 15% over steel.