We confirm the size and perform individual design for length and thickness. For Fender, as well as AtelierZ, History, Sadowsky, and other 4-string JB types, we can deliver products that fit in most cases (^^) Even the manufacturers themselves don't often realize that this part often becomes unusable unless the thickness is adjusted individually. We will handle 5-string basses and those with layouts clearly different from the standard JB separately. If you have any concerns, please contact us with the model number first (prices may also vary). This is because it won't fit with our 4-string layout if it has pickups with unique specifications. ＜Other Specifications＞ ・Includes screw clearance, and can be easily attached with the included double-sided tape! ・Top surface shape can be flat or arched to match the string height. (Semi-order products will have an arch applied from a standard mold) ・Depending on the design, we add a thumb rest like in the second image. (We don't add it if it's not needed. Please consult us in advance if you have a preference on whether to add it or not) ・We also provide adjustment guidance for those who are unsure about the condition of their instrument. (There are very few people (including music stores) who have proper knowledge of bass adjustments...!) ・We understand that the feel may not be right due to customer measurements or individual style differences, so we offer an exchange service for 300 yen, including round-trip shipping (^^) We also offer a small discount for bulk purchases, so please consider it. We also offer various shapes and custom-made designs that follow string height. We propose designs that match your playing style, so please feel free to contact us.