The falcon eyes fer-sb30160 softbox is 30 x 160 cm in size and is designed for the falcon eyes gn, te, ql and hl series studio flash units. the fer-sb30160 is easy to assemble and is mounted on your studio flash unit with the included speed ring the studio flash head sits deep in the softbox, which ensures minimal loss of light and provides an even spread of soft lighting. The fer-sb30160 is supplied with a standard falcon eyes speed ring. this speed ring is compatible with all falcon eyes studio flash units except for the falcon eyes ss series. by using an additional speed ring adapter, the fer-sb30160 is compatible with bowens, broncolor, elichrom, hensel, multiblitz and linkstar studio flash units. to view these speed ring adapter rings, please see the optional accessories tab below. These softboxes are not suitable for halogen lamps, (such as the falcon eyes qlt-1000), due to the high heat generation of these lamps. the soft boxes from the sbq series are suitable for such types of lamps.