Check the listing for details. Bone Nut Shims - White - 2.22" x .25" x .04" - 2 pack. Color: White, Condition: New. Listed at 2.99 USD. Bone Nut Shims Lightly bleached bone - White Approximate dimensions - 2.22" (56mm) x .25" (6.5mm) x .04" (1mm) Qty 2 Bone nut shims can be glued to the bottom of your existing nuts to increase the height of the nut. These are approximately .04"(1mm) thick and very easy to sand to size. These bleached bone nuts are not overly processed, so you will get a nice solid bone to make a quality guitar nut. These are typically slightly oversized from the listed dimensions to give you extra material to work with. **Because bone is a natural product, there will be some variations in the color of the bone from the pictured item. Bone can vary from light to dark and show color variation, streaks, spots, and a molten look. This is not considered a defect.