Benro RM series remote control are machined by CNC and has anodizing treatment on the surface.It has excellent performance on wear-resistant.And the external laser mark is very clear and time lasting.The RM remotes are compatible with most of the gear in the market and every one would have different configure according to the matching gear.The RM remotes are compatible with most of the gear in the market and every one would have different configure according to the matching gear.