Ex-Pro® GoPro Hero 3, 3+, 4 Filter holder adapter to 52mm standard lens with Ex-Pro 52mm UV, CPL & FLD Lens Kit - Adapters CNC anodised Aluminium 52mm lens adapter simply locks on housing with hex lock screw on site - converting your GoPro Hero 3,3+ & 4 to take standard 52mm Lens.
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