Our 24" x 24" (60cm x 60cm) studio softbox has a metal 5.5" inner diameter speedring which is more than big enough to accomodate the CL-SFT1 and 200w 8U bulb. Does not include CL-SFT1 fixture or 200w 8U bulb which are available separately or in a kit format. The studio softbox is the classic "rod" softbox version which is a bit harder to setup than our portable "speed" softbox version which basically pops open, very little setup involved..
The softbox set includes the 4 support rods, reflective softbox material, a fabric velcro eggcrate grid, metal speedring, diffusion silk front and nylon travel kit for the softbox. Watch the CL-SFT1 video in the Cool Lights Video Magazine for more on the setup of the CL-SFM2424