Coemar 4 leaf barndoor intensifier + asymmetric diffuser (for SoftLite LED)

Astera DoPchoice SnapGrid for Helios Tube 0.5m.

Lens for use on the Lishuai Focus 50D COB light.

Great for use to precisely control the output of a 50D and with barn door can be used to mask the output even more specifically into a narrow angle with sharp edges.