The LMR-C347 Tripod Mount Ring from Haoge is designed for Canon EF 300mm f4L USM, EF 400mm f5.6L USM, EF 70-200mm f4L USM, and EF 70-200mm f4L IS USM Lens. It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.
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