nuts / saddles
Graph Tech TUSQ nuts & saddles
Self-lubricating synthetic nuts and saddles, for players replacing a bone or plastic nut.
Why it matters
TUSQ is Graph Tech's synthetic material for nuts and saddles. Self-lubrication is the point: the surface is meant to reduce friction where the string leaves the nut or crosses the saddle.
Note
The self-lubricating synthetic nut standard.