The ring shaped tripod mount incorporates a lightweight and durable magnesium alloy. Compatible with standard and Arca Swiss clamps. Connectable to Arca Swiss platforms Possibility to attach the lens directly to the Arca Swiss platforms and screw the knob clamps. As it incorporates 1/4 screw holes, it can also be connected to tripod sockets other than Arca Swiss. Enhanced Usability Allows a lens hood to be fixed in the opposite direction and can be inserted into the lens case while attached. To prevent the fall of the Arca Swiss clamp, the safety stop screws are provided.