CoCocina 52Mm 10X Magnifier Macro Close Up Lens for Gopro Hero 5 Hero 6 Magnification Action Camera Mount: Amazon.com: Tools & Home Improvement
FLIP +15 MacroMate Mini Underwater Macro Lens for GoPro
QKOO 15X Macro Lens for GoPro Hero 5, 6, 7, 2018 Sport Action Cameras, Standard protective lens replacement - Walmart.com
Amazon.com : QKOO Macro Lens for GoPro Hero 7 Black/Hero (2018)/Hero 6 Black/Hero 5 Black Original Waterproof Super Suit Housing Case - 58mm 16X HD Macro Close-up Lens + Adapter Ring : Electronics
Amazon.com : D&F 52mm Professional Close-Up Macro Filter Lens 10X Magnificatoin High Definition Lens for Hero 5/Hero 6/Hero 7 Black/Hero(2018) Camera Body (Not for Camera Housing) : Electronics
How to use macro filter w/Gopro HERO5/6/7, minimum focus test & sample footage - YouTube