Nitecore Red filter NFR25 with EdisonBright Battery Case for (25.4mm) P12, P10, SRT3, SRT5, EA1, EA2, EC1, EC2, MT21A, MT2C, MH1A, MH2A, MH1C, MH2C - - Amazon.com
Nitecore Colored Filters for 25mm Flashlights
Nitecore 32mm Red Flashlight Filter for P20iX P20i and P20i UV
2022 Original Nitecore Red Green Filter Diffused Nfr70 Nfg70 Mineral Coated Glass Lens For Flashlight With Head Of 70mm Mh40gtr - Portable Lighting Accessories - AliExpress
NiteCore NFR40 40mm Red Lens Cap Filter Diffuser for MH27 MH27UV | eBay
NiteCore filter, red, 40 mm | Advantageously shopping at Knivesandtools.com
Nitecore NFR50 (Red) and NFG50 (Green) Filters | BatteryJunction