・ 1 black washer with excellent slipperiness x 1 ・ 1 durable white washer (thin) x 1 ・ 1 metal washer to prevent deformation of the resin washer x 1 ・ 1 white washer (thick) with excellent lubricity x 1 One set consists of 4 washers per peg x 6 pegs, simply packaged (as shown in the second image) and sent in an envelope via Nekopos (a Japanese delivery service). These can be used for rotomatic type pegs like those shown in images 3-5. It's a part that can be replaced by simply removing one screw with a Phillips head screwdriver. There is no set order for assembling the washers, but in my case, I assemble them in the order shown in the fifth image. The outer diameters of the washers are 6.5mm and 7.0mm, and the inner diameter is 4.2mm. Since the inner diameter is 4.2mm, they cannot be used for pegs with a shaft diameter of 4.2mm or more. In rare cases, pegs with a shaft diameter of 4.2mm or more exist, so if you are unsure, please measure with calipers beforehand before purchasing. The pegs for which we have confirmed compatibility are as follows: ・GOTOH SGV510Z ・GOTOH SG381 ・Greco WS-STD pegs ・Squire Affinity series (2018) pegs ・Bacchus Universe series pegs (Strat model) ・ Legend Strat model pegs (year unknown) ・ BUSKERS (Shimamura Music original) Les Paul Custom model pegs (year unknown) ・Mavis (Ishibashi Music original) Telecaster type pegs (year unknown) ・Old Japanese acoustic guitar (Kasuga Gakki) pegs ・Aria Pro II Magna series (90s) pegs ・Playtech TL250II pegs ・FENDER genuine locking pegs (Model #: 0990818105) The pegs that were not compatible are as follows: ・Greco WIS-3S (2018) pegs (shaft diameter is 4.2mm or more) ・Aria Pro II PE-DLX (1999) pegs (shaft diameter is 4.2mm or more)