TRC U Amboyna Lam
This truss rod cover is made of Amboyna Burl, the most expensive wood on the planet! This is a triple laminated piece with solid Amboyna Burl on top, a black fiber layer in the center for strength and stability and a maple back. Not only does this strengthen it (especially at the screw holes) but it has a classy look on the edges. There are matching tuner buttons available too.