OEM OEM JZA80 Supra & JZZ30 Soarer Rear Tailshaft washer.
These washers help clamp an even force of the bolt onto the donut and diff / tailshaft.
Note: This product does not come in the OEM Toyota packaging, as Toyota doesn't sell this item usually individually. This is for a single washer.
Six of these are required in total.
Bolt for this washer can be found HERE
Nut for this washer can be found HERE