This is an acrylic finger rest, measuring 35mm wide x 27mm high and 8mm thick. It's designed to fit Precision Basses and Yamaha BB series basses. Made of high-transparency acrylic, it maintains the instrument's appearance while adding a touch of luxury. Commercially available acrylic products are much more expensive than 3D-printed ones, but this shop offers comparable quality at an affordable price. The semi-circle for the pickup mounting screw is 13mm in diameter. It will be shipped with clear double-sided tape pre-applied. Please let us know via message if you do not want the tape. *Please confirm the dimensions to ensure compatibility with your bass before purchasing.* *This product is designed with the priority of not drilling holes in your valuable instrument. We have selected tape that is as residue-resistant as possible, but due to the nature of the attachment method, there is a risk of tape marks or discoloration depending on the usage environment.* Please understand the benefits of "no drilling required" and the risk of tape marks, and use the product at your own risk regarding any installation issues. We also have other items for sale, such as finger ramps, so please take a look.