Founded in the early 80's by Dave Dunwoodie, Graph Tech Guitar Labs are now THE leading manufacturer of top nut's, saddles and bridges for acoustic guitars, electric guitars and bass guitars.
Graph Tech nuts and saddles are made using a mad made Ivory, TUSQ, that has a built in lubricant, giving strings an easy ride across them, no more string binding.
Tusq nuts and saddles are easily shaped using ordinary sandpaper, and are an incredible upgrade on regular plastic, the improvement in tone you'll get is incredible.
Graph Tech parts are found as standard on almost all leading guitar manufacturers instruments.