Thank you for viewing! The product is a "Finger Ramp Set for PB." This is a set including both the neck and bridge sides. Please refer to the images for the dimensions. The neck and bridge sides have basically the same size. The thickness is 8mm in the center and 6mm on the 1st string side. (The 3rd string area is the highest.) It fits perfectly with Seymour Duncan pickups. The white bass in the image is made by PLAYTECH, and there is a slight gap because the pickups are larger. It is made with a 3D printer, and the material is PLA. Unlike general plastics, the surface is not smooth and has small bumps. Thank you for your understanding. Double-sided tape is included, so please attach it. Thank you for your consideration.