Ikelite Anti-Reflection Ring for Canon RF 15-30mm f/4.5-6.3 IS STM Lens Lighting Accessories This Top Bar can be

This Top Bar can be used for additional Ball Mounts

and each side has a locking mechanism for secure attachment

Fibre Optic Fibre optic only strobes are not compatible with this installation

The housing cannot be converted back and forth repeatedly

OM User Manual

Ikelite Anti-Reflection Ring for Canon RF 15-30mm f/4.5-6.3 IS STM Lens Lighting Accessories This Top Bar can beIkelite 0923. 15 Anti Reflection Ring for Canon RF 15 30mm f 4. 5 6. 3 IS STM Lens A self adhesive vinyl label covers the white lettering and ring details on the front of the lens to reduce reflections when used behind a dome port underwater. Designed specifically for use with the Canon RF 15 30mm f 4. 5 6. 3 IS STM lens.