Glued to MusicGraph Tech TUSQ XL Sleek String Trees (Black)\nThe Graph Tech TUSQ XL Sleek String Trees maintain the break angle of the strings across the nut but eliminate the tuning problems often associated with the added friction from string trees. They are made from Graph Tech's TUSQ XL material which is impregnated with PTFE for permanent lubrication ensuring strings don't bind during tuning, bending or tremolo use, improving tuning stability and reducing string breakage. The height of the string tree can be easily reduced if required by sanding the base of the tree on flat, fine grit sandpaper and they are supplied with 2 long and 1 short mounting screws so the short screw can be used if the height has been reduced.Features\n--Maintains the break angle of the strings across the nut\n--Permanently lubricated TUSQ XL material for improved tuning stability and reduced string breakage\n--String tree height easily reduced if required\n--Supplied with 2 long and 1 short screw to suitp