MoYu Washer Set (Pre-2016 Cubes)
The MoYu Washer Set contains 6 washers that are fully compatible with all MoYu and YJ cubes. They can come in handy if your cube happens to be missing a few or all the washers, which can be common for YJ/MoYu cubes, like the YJ GuanLong. The washers can help reduce friction between the spring and the plastic.
These washers are not compatible with any of the dual adjustment puzzles recently released by MoYu. They are generally compatible with MoYu cubes released prior to 2016.