SUMI Guitar Parts offers high-quality products that "clear a certain level of quality," drawing on the experience of working at a musical instrument store and guitar construction & repair. These are bushings to fix the bridge (preventing it from moving back and forth) for Jazzmaster, Jaguar, Mustang, and other guitars. "2 sets (4 bushings)" The sizes are: 6.5mm diameter for the bridge post side, 8mm diameter for the anchor side, 13mm diameter for the flange, and 1.5mm thickness for the flange. Notes: Some guitars may fit these bushings easily, while others may not fit quite right (too tight or too loose). If they don't fit, please try the following: If too tight: ・Apply lubricant to the bushings and bridge posts, etc. If too loose: ・Wrap masking tape around the bridge posts, etc. *We cannot address installation issues due to the guitar's own precision (individual differences). For example, if there is a large misalignment between the bridge holes on the pickguard side and the guitar body side, the flange of the bushing may interfere with the pickguard and not install properly (it may be possible to install it by shaving the flange). *Please be sure to check the dimensions of your guitar's bridge carefully before purchasing. Shipping is free and will be via Yu-Packet (delivery to your mailbox with tracking service) only. *To prevent any trouble for both parties, we cannot accept requests for other shipping methods without tracking service.