Thank you for viewing! This product is a "Finger Ramp for JB Bass, Front, Bridge Side" that combines a short-type finger rest. Sizes: Finger ramp width: 91mm Length: 28.5mm on the 4th string side, 47.5mm on the 1st string side Thickness: 6.9mm near the center, 4.9mm on the 1st string side (Asymmetrical, with the 3rd string area being the highest) Pickguard thickness is assumed to be 2.5mm. Finger rest length: 50mm Height: 10mm There is a recess to avoid interference with the screws holding the pickguard, but it's been matched with my own, so if it interferes, please remove the screws. Made with a 3D printer, 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 product. Thank you for your consideration.