Buy from Amazon : br br SMDV Diffuser-50 -- Professional 20x20 Rigid Softbox for Nikon Flash SB-910 SB-900 SB-800 SB-700 br br Extremely fast assembly by snaping six rods into the edge of the speedring br Simple take down - pinch tabs on the back of the speedring to release the rods br The curved handy grip allows you to easily move the direction of the diffuser br Super light weight small storage space with handy carrying case br 24 Month Manufacture Warranty