The listing is for (2x) [c]_stealthburner_LED_diffuser.stl (07/23/2022 release) printed in clear resin at 50μm / 0.05mm. It was then clear coated with UVLS to resist yellowing. The result is very good clarity and dimensional accurate.
*Please check github release note to make sure this version of [c]_stealthburner_LED_diffuser.stl fits rest of your parts.