We were asked to source these to protect against swirl marks on unicorns 🙂
0.5mm thick and available in 21mm and 22mm. 21mm because the first batch were stamped too small hence the cheaper price.
Supplied as a pack of 20pcs
Please note that the ninja on the washer in the above image is a watermark and not embossed on the gasket despite how awesome it would look 🙂