This is an aftermarket product imported from overseas. This is a truss rod cover designed for PRS guitars. The solid wood, believed to be rosewood, has the familiar Sanskrit character from the Santana model inlaid with abalone. The exact type of wood is unknown, so please understand this is an approximation. This time, I applied an oil finish using Xotic Oil Gel to make the rosewood look more like ebony. Two or three coats were applied to the sides and back. I think the abalone's luster is also more distinct. The size is indicated in the image. The thickness is 1.5mm. Screw holes are not pre-drilled, allowing for custom fitting to your guitar.