Bone's hardness and density contributes to good tone, it polishes well, and it allows more precise slot filing.
Stewart-MacDonald is your source for quality bone!
Bone is traditionally preferred for making nuts and saddles on quality instruments.
Blank nuts have oversize length and height, for custom shaping in your shop. They're ready for trimming, filing, sanding and slotting.
Preshaped nuts will save you a LOT of work — a head start for the novice builder, and a bonus for the busy repair shop where time is money! The dimensions have been carefully researched, and minor trimming, slotting, and sanding are all that's needed to fit most popular guitars.