Nut of unbleached bone. A larger than standard bone blank, making it suitable for most guitars.
55x10x7mm (2.17" x 0.39" x 0.28")
Extra large
Unbleached bone offers several favorable characteristics. It is hard, dense, fairly light, relatively durable and offers excellent resonance and sustain. Unbleached bone also has some slightly self-lubricating properties that help it resist strings hitching in the slots and going out of tune.