Centered intonation screw for Fender Vintage style bridges (see below for American Standard/Series). High quality replacement saddles for your vintage-style Strat bridge. You’re probably used to the black graphite saddles Graph Tech has made for years. These are the same idea – reduced string breakage and increased sustain – but they look more like stock saddles. Each saddle insert, is impregnated with Teflon, the slipperiest substance on earth, which eases the grip between the saddle and string, spreading the stress over a greater portion of the string, thus eliminating 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. New, $39.