Angler V1 FastBox 20" Octagonal Softbox Kit - Manual (Page 5)

Opening the FastBox
Hold the pistol grip with one hand,
and pull the softbox tab up to the
built-in speed-ring until it clicks in
place.
Mounting the FastBox
on a Light Stand
Fit the twist lock socket onto the
spigot of your light stand.
Turn the twist lock counterclockwise
until secure.
5
Setting Up the FastBox