Thank you for viewing. The product is a "Finger Ramp for PJ Bass - Semi-Order". This finger ramp is designed for basses that have a P-bass pickup in the front and a J-bass pickup in the rear. You can specify the length from the F.PU to the R.PU between 20-50mm. The thickness is 10mm near the center and 8mm near the 1st string. It is asymmetrical, with the thickest part around the 3rd string. Please refer to the images for other dimensions. 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. *The double-sided tape is not compatible with lacquer paint. It may also leave marks on delicate finishes such as oil finishes. We believe that you can fix it by sandwiching rubber or sponge between this product and the PU. We kindly ask that the successful bidder take care of this. Thank you for your consideration.