Missing listing is Bowen mount adapter that allows the S mount to hold the softbox. You can't set it up without it. The description doesn't say you have to buy it separately.
Lighting 2X76X76Cm Photography Continuous Equipment
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Datacolor SCK100 SpyderCheckr
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π· Manfrotto 035RL Super Clamp with 2908 Standard Stud - Replaces 2900 - Black: Ultimate Professional Camera Mount and Support Tool
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