1.[Seat Cushion Adjustment Knob and Installation Lock Button]: Rotate the knob clockwise to lower the cushion and lock the device; Rotate counterclockwise to raise the cushion and release the device this also effectively protects the locked device; Press the installation lock button once. Release the device adjustment the release button automatically locks it into place. 2.[Adjustable Angle and Handle Design]: Equipped with an umbrella hole for easy installation of a photography umbrella; its rotation supports angle adjustment to achieve fill light in different directions. The S type flash stand has a handle design that allows handheld horizontal movement for more flexibility; it has a 3/8 inch hole on the bottom and is applicable to most film and TV flash accessories. 3.[Adjustable Installation Size]: The installation size used to fix the body can be adjusted to make it suitable for various types of ceiling lights. Applicable to most studio flash accessories, such as softboxes, standard reflectors, radomes, snoots, etc. 4.[Integrated Design]: This photography equipment S type flash bracket adopts an integrated design and can be used without assembly. The S type photographic equipment flash holder is compact, lightweight, easy to carry, and does not take up much space.