For Blackmagic 4K/6K. Formfitting aluminum and stainless steel cage. Three cold shoes are integrated into the cage for mounting accessories. 3:Allen Key（199-000000-137） 1. Anti-Twist Design. We have our own professional R&D testing team, our own factory to make products, we are one of the largest production manufacturers in China, we also have offices as well as warehouses overseas.
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