39 X 39 Inch Foldable Umbrella Like Collapsible Square Softbox (100 X 100 Cm) + 40 Degree Grid + Ring for Alienbees Alien Bees B400 B800 B1600 White Lightning X800 X1600 Einstein E640 Flash Light 39 x 39 inch (100 x100 CM) recessed strip softbox. 19 inch deep. Umbrella-like structure with 4 sturdy steel ribs. 10 mm shank. High quality Silver reflective screen interior with velcro edges. One white translucent diffusion front screen with Velcro edges to soft light. One white translucent diffusion baffle screen for even softer light. One 40 degree grid, 2 One cast hub with speedring mount for Alien Bees, White Lightning and Einstein flash light. Mounting ring can be rotated and locked with a thumb screw. One handy carrying bag is included to make transport and storage a snap.