The Graph Tech TUSQ XL Flat Bottom 42 mm Strat Slotted Nut is a great upgrade for guitars with Fender style nuts but with flat bottom, 42 mm wide slots. It is pre-slotted for a quick and easy installation. TUSQ XL is impregnated with PTFE for permanent lubrication ensuring strings don't bind in their slots during bending or tremolo use, improving tuning stability and reducing string breakage. The TUSQ XL material is harmonically rich and transfers vibrations efficiently to the guitar, as a man-made material it is consistent from piece to piece with no hidden soft spots associated with bone. Graph Tech nuts are supplied slightly oversized to allow for final fit and shaping (material works easily with fine sandpaper).