Thank you for viewing! The product is a "Finger Ramp for JB, Narrow Width, Pickguard Compatible." This finger ramp is designed for Jazz Basses with a narrow space between the F.PU and R.PU. The dimensions are: Width: 91mm on the F.PU side, 94mm on the R.PU side Distance between F.PU and R.PU: 71mm Pickguard step: 2.2mm Thickness: 9.5mm near the center, 7.5mm on the 1st string side (The 3rd string area is the highest) A recess has been made to avoid interference with the screws holding the pickguard. However, as it has been matched with my own, please remove the screws if they interfere. 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 use it to attach the ramp. Thank you for your consideration.