Thank you for viewing! The product is a "Finger Ramp for JB, Narrow Width, Pickguard Compatible." This is a finger ramp 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) It has a recess to avoid interference with the screws holding the pickguard, but it's based on my own measurements. If it interferes, please remove the screws. It is made with a 3D printer, and the material is PLA. Unlike general plastics, the surface is not smooth and has small bumps. Please understand this. Double-sided tape is included, so please use it to attach the ramp. Thank you for your consideration.