It allows to use standard speedlight with Bowens light modifiers.

Bayonet adapter with manual aperture ring for Nikon F mount lens to a Sony-E camera

Bayonet adapter with aperture capabilities for Nikon F mount lens to a Micro 4/3 camera

Bayonet adapter with IS capabilities for Canon EF/EF-S mount lens to a Micro 4/3 camera

Bayonet adapter with AF capabilities for Canon EF/EF-S mount lens to a Micro 4/3 camera

The bracket for use bowens mount accessories with E27 bulbs.